自2010年至今的四级考试中， 共出现过 次
自2010年至今的六级考试中， 共出现过 次
N-COUNT (标明相关信息的)小布条，小标签，小纸条 A tab is a small piece of cloth or paper that is attached to something, usually with information about that thing written on it.
A stupid medical clerk had slipped the wrong tab on his X-ray.
...a small red tab sewn on to the left-hand side of the back right pocket.
N-COUNT (商品、服务的)总价钱，账单 A tab is the total cost of goods or services that you have to pay, or the bill or check for those goods or services.
At least one estimate puts the total tab at $7 million...
至少有一个估价把总数定在了 700 万美元。
'I'll get my purse out of the bedroom.' — 'No sweat, Mrs. Day. We can put it on your tab.'
N-COUNT (易拉罐的)拉环 A tab is a metal strip that you pull off the top of a can of drink in order to open it.
N-COUNT (尤指非法出售的)药片 A tab is a drug, especially one that is sold illegally, which is in tablet form.
One tab of Ecstasy costs at least £15.
一粒摇头丸至少卖 15 英镑。
PHRASE 密切注意，严密监视(某人的一举一动) If someone keeps tabs on you, they make sure that they always know where you are and what you are doing, often in order to control you.
It was obvious Hill had come over to keep tabs on Johnson and make sure he didn't do anything drastic.
PHRASE (替一群人)付账，承担费用 If you pick up the tab, you pay a bill on behalf of a group of people or provide the money that is needed for something.
Pollard picked up the tab for dinner that night...
Today any employee with back or shoulder pain can go straight to Mr Jay and the company will pick up the tab.