- n.果酱; 拥挤，挤满; 困境; [无线]干扰;
- vt.把…挤进; 把…塞满，使挤紧; 使堵塞; 使卡住;
- vi.挤满，拥挤; 堵塞; 发生故障;
- 复数: jams;
- 第三人称单数: jams;
- 过去式: jammed;
- 过去分词: jammed;
- 现在分词: jamming;
scones and jam with clotted cream
She sat in the car, silently fuming at the traffic jam.
a pot of jam
Skim the scum off the jam and let it cool.
We were stuck in a traffic jam .
They were in a real jam, Bob thought glumly.
Wipe the jam off my mouth, will you?
Place them in a jam jar, porcelain bowl, or other similar container.
Hundreds of jam pots lined her scrubbed shelves.
A 25 mile traffic jam clogged the northbound carriageway of the M6.
My gran's given us some apple jam.
Trucks sat in a jam for ten hours waiting to cross the bridge.
Arabian jam is also known as angels' hair preserve, or more prosaically as carrot jam.
We're not just a lot of old biddies going on about jam.
You'll have to catch the next bus, we can't possibly jam any more passengers in.
They were sent to jam the enemy's radio stations during the war.
The knives and forks were kept in a jam jar.
She spread the toast thinly with raspberry jam.
Far too many football supporters tried to jam into the small ground.
I'm in a bit of jam, I haven't got enough money to pay for this meal.
The authorities were unable to jam this wavelength.
He's in an awful jam over his marriage.
I can't jam another thing into the bag.
There was such a jam of people that we couldn't get in.
The little boy smeared jam on the chair.
There is a traffic jam.
Wireless security providers will often take steps to help combat the threat of jamming attacks.
When the system thinks it's being jammed, it'll notify you via -94- push alert ( ' , 推送警报).
Then, he's going to need to know the technical details of your system and acquire the specific equipment necessary for jamming your specific setup.
The team at Frontpoint addresses the issue in a blog on its site, citing their own jam protection software and claiming that there aren't any documented cases of successful jam attack since the company began offering wireless security sensors in the 1980s.
That approach will eliminate most cord-cutting concerns—but what about their wireless equivalent, jamming? With the right device tuned to the right frequency, what's to stop a thief from jamming your setup and blocking that alert signal from ever reaching the base station?Jamming concerns are nothing new, and they're not unique to security systems.
So, too, would the motion detectors in your home, so the thief will need to continue jamming once he's inside and searching for things to steal.
SimpliSafe, winner of our Editor's Choice distinction, utilizes a special system that's capable of separating incidental RF interference from targeted jamming attacks.
SimpliSafe was singled out in one recent article on jamming, complete with a video showing the entire system being effectively bypassed with handheld jamming equipment.
SimpliSafe provides devices that are able to distinguish incidental radio interference from targeted jamming attacks.
Other systems also seem confident on the subject of jamming.
Jamming attacks are absolutely possible.
It's easier to find and acquire jamming equipment for some frequencies than it is for others.
It is possible for burglars to make jamming attacks with the necessary equipment and skill.
He'll need to be jamming you at this point, as a broken window or opened door would normally release the alarm.
For comparison, let's say you wanted to jam a conversation between two people—all you'd need to do is yell in the listener's ear.
But how probable is it that someone will successfully jam their way into your home and steal your stuff?Let's imagine that you live in a small home with a wireless security setup that offers a functional anti-jamming system.
As said before, with the right equipment and the right know-how, it's possible to jam any wireless transmission.
A burglar has to continuously jam the wireless security device to avoid triggering the alarm, both inside and outside the house.
To prevent possible traffic jams in nearby areas.
Jane may be caught in a traffic jam.
The music service This Is My Jam helps people navigate the tens of millions of tracks now available instantly via Spotify and iTunes.
The service was only launched this year, but by the end of September 650,000 jams had been chosen.
Hundreds of fans jammed the airport to greet them.
2019年高考英语浙江卷 阅读理解 七选五 原文
There is a traffic jam on king street.
2016年高考英语上海卷 听力 选项收起真题例句
1. preserve of crushed fruit
2. informal terms for a difficult situation;
"he got into a terrible fix"
"he made a muddle of his marriage"
3. a dense crowd of people
4. deliberate radiation or reflection of electromagnetic energy for the purpose of disrupting enemy use of electronic devices or systems
1. press tightly together or cram;
"The crowd packed the auditorium"
2. push down forcibly;
"The driver jammed the brake pedal to the floor"
3. crush or bruise;
"jam a toe"
4. interfere with or prevent the reception of signals;
"Jam the Voice of America"
"block the signals emitted by this station"
5. get stuck and immobilized;
"the mechanism jammed"
6. crowd or pack to capacity;
"the theater was jampacked"
7. block passage through;
"obstruct the path"
jam on the brakes
operate the brakes of a vehicle suddenly and forcibly, typically in response to an emergency
(Brit.)a pleasant thing which is often promised but rarely materializes
a promise of jam tomorrow wasn't enough to satisfy them.
press, jam, squeeze, compress, squash