The goal of the project was to boost wheat production in Mexico, which at the time was importing a large portion of its grain.

该项目的目标是提高墨西哥的小麦产量，而当时那里很大一部分粮食都依赖进口。

youdao

You will also need Firefox 3.0, which at the time of writing this is not yet released.

还需要用到 Firefox 3.0，撰写本文的时候这个版本还没有发布。

youdao

Wells Fargo made a hostile bid, which at the time was unheard of in the banking sector.

富国银行发起一场敌意收购，这在当时的银行业可谓史无前例。

youdao

And he was the first black director of the United States Information Agency which at the time supervised the Voice of America.

VOA: special.2009.11.01

This doesn't happen, but at the same time it's a world of illusion in which the reader lives all too comfortably. Right?

这些不会发生，但是同时这是一个幻境,读者太舒适地生活于其中，对吧？

耶鲁公开课 - 文学理论导论课程节选

Alexander defeated the Persian Army, which at that time controlled all of Asia Minor, Modern Turkey, and had even threatened to control Greece.

亚历山大大败波斯军队，波斯人当时控制了整个小亚细亚，现代土耳其，甚至扬言要占领希腊。

耶鲁公开课 - 新约课程节选

VW, which at the time controlled 34% of Scania's stock, did not support the takeover.

ECONOMIST: MAN, VW and Scania

Upon returning home, which at the time was in Connecticut, his re-entry to civilian life was rocky.

WSJ: Local Soldier's Iraq Trek, From Bullets to Ballet

Four suitors pursued Tularik, which at the time needed a well-heeled partner due to a high cash-burn rate.

FORBES: Magazine Article