机会也许只敲一次门但试探却总是在按门铃。

Opportunity may knock only once but temptation leans on the doorbell.

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机会只会敲一次门。

Opportunity may knock only once.

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该国总统小汤米·雷门格绍在一次讲话中指出：“海洋受到威胁，这对岛上社区的打击最为巨大。”

"Island communities have been among the hardest hit by the threats facing the ocean," said President Tommy Remengesau Jr. in a statement.

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This is the first instance in which Richard will do what he later describes Mencken doing, using words as weapons.

如同门肯后来所做的,语言第一次被理查当作武器。

耶鲁公开课 - 1945年后的美国小说课程节选

When I first taught this class that was back in 2002, I taught it at a seminar and had eight students.

我第一次开设这门课程，是在2002年，是以讨论会的形式，只有8名学生。

哈佛公开课 - 幸福课课程节选

It's a huge price to pay in a pass-no-record first semester class . And, you know who is most severe on the committee on discipline?

这个代价太大了，只为了,第一次学期通过一门无记录的课程,你们知道着纪律委员会,谁最为严厉吗？

麻省理工公开课 - 固态化学导论课程节选