The role of women in war has been a hot topic of debate since the Gulf conflict.

自海湾冲突以来，女性在战争中的作用一直是一个热门的争论话题。

《柯林斯英汉双解大词典》

Sarah had been plagued continually by a series of minor illnesses since her mid teens.

自从十四五岁起萨拉就一直小病不断。

《柯林斯英汉双解大词典》

She's had a lot of problems since her husband died but she seems quite cheerful, all things considered.

自从丈夫死后，她面临很多困难，但总的来说她看上去情绪还是挺乐观的。

《牛津词典》

Researchers have known since the nineteen thirties that the actively growing tip of a plant releases a hormone called auxin.

VOA: special.2009.10.13

A lot has happened since the exuberant optimism of the political spirit that we see in a tract like Areopagitica.

弥尔顿在《论出版自由》中发表了极为乐观的政治思想之后,政治形势发生了很大变化。

耶鲁公开课 - 弥尔顿课程节选

Actually, it's the first time I've seen him since the end of my senior which was about a year ago.

其实，自从大三之后我还是第一次见他，是一年前的事了。

我尊敬的教授 - SpeakingMax英语口语达人

Prime-time schedules would appear relatively unchanged for a couple of months, since a handful of episodes have already been prepared.

FORBES: Hollywood Strike Set

Mellody Hobson has served as the president and a director of Ariel Investments, LLC, a Chicago-based investment management firm, since 2000 and as the chairman since 2006, and a trustee since 1993 of the mutual funds it manages.

FORBES: Mellody Hobson

But then when I read this, I was so shocked that here you have a governor of color, since she's Indian, a man of color, since he sounds Latino.

NPR: How Will Bachmann's Departure Affect Politics?