Lead remains one of the metals known since ancient times.

铅是自古已知的金属之一。

金山词霸

Few details are known about his childhood.

关于他的童年，已知的细节很少。

金山词霸

It is difficult to relate these results with any known cause.

很难把结果与任何已知原因联系起来.

《简明英汉词典》

People usually infer an unknown fact from a known fact.

人们通常从已知的事实中推断未知的事实.

《简明英汉词典》

The testimony consisted with all known facts.

证据与全部已知事实相符.

《现代英汉综合大词典》

Her manuscript is considered the earliest known work authored by a female physician.

她的这份手稿被认为是已知最早由一位女性内科医生撰写的著作。

金山词霸

People inhale nicotine and carbon monoxide when smoking, and these substances are known causative factors.

人们在吸烟时会吸入尼古丁和一氧化碳，这些物质是已知的致病因素。

金山词霸

His estimate of half a million known HIV positive cases was calculated from the incidence data of the virus in the region.

他估计有50万个已知的HIV阳性病例，这是根据该地区病毒的发病率数据计算得出的。

金山词霸

Geminiviruses are the only other group of plant DNA viruses known.

双联病毒是已知的唯一另一组植物DNA病毒.

辞典例句

A hydrocarbon was known to be either an alkene or alkane.

某碳氢化合物已知可能是烯烃或是烷烃.

辞典例句

The given radius being 4 ft., find the circumference.

已知半径为四英尺, 求周长.

辞典例句

Today only a few of the answers are known.

目前已知的答案只有少数几个.

辞典例句

Activated charcoal is known to be an excellent catalyst for many reactions.

已知活性炭对很多反应是一种极好的催化剂.

辞典例句

In mammalian species, a variety of chromosomal rearrangements are known to exist.

在哺乳类的物种中, 已知有许多类型的染色体内部重新排列.

辞典例句

Out of quantum electrodynamics come all known electrical, mechanical, and chemical laws.

从量子电动力学可以得出所有已知的电学 、 力学和化学定律.

辞典例句