A symbiotic relationship is an interaction between two or more species in which one species lives in or on another species.

共生关系是两个或多个物种之间的相互作用，其中一个物种生活在另一个物种体内，或依靠这一物种生活。

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Gause performed numerous tow-species experiments in the laboratory, in which one of the species became extinct when only a single kind of resource was available.

高斯在实验室里进行了许多双物种实验，其中一个物种在只有一种单一资源的情况下就灭绝了。

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Historical records document a group-oriented existence, in which one room was used for eating, entertaining guests, and sleeping.

历史记录记载了一种以群体为导向的生活方式——吃饭、招待客人和睡觉都在一个房间进行。

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"This is not any place in which one so good as Miss Johnsy shall lie sick,"

VOA: special.2009.08.01

The contract has to specify what are the causes of, let's say, death or a situation in which one is covered.

合约中必须指明,合约建立目的，比如说，死亡或者承保的是什么情况。

耶鲁公开课 - 金融市场课程节选

but everyone knows, like, which one's, ah... which societies exist and who is in them, just things like that.

但是每个人都知道这种社团的存在，也知道社团的成员是谁，这些事情都不是秘密。

耶鲁对比哈佛 - SpeakingMax英语口语达人

Iran has now released a video of the 15 detainees in which one of them speaks.

NPR: Iran, Britain at Impasse over Captives

The intergovernmental model in which one currency is backed by 17 sovereign nations is surely obsolete.

WSJ: France Is Biggest Obstacle to Solution

Last August there were four blasts in the western city of Pune in which one person was injured.

WSJ: At Least 12 Killed in Hyderabad Blasts in India