"It's nothing," he said, but he couldn't stop coughing.

VOA: special.2009.02.07

There's absolutely no reason I couldn't have switched it around and said that instead the pi orbitals form between these atoms instead of those first atoms I showed.

我完全没有理由,不能把它转过来,现在π键在这些原子间,而不是我开始展示的那些原子间。

麻省理工公开课 - 化学原理课程节选

She said it was nearby, but couldn't give me the address.

她说就在附近，但没能给我具体地址。

Where 实战 - SpeakingMax英语口语达人

And then he got so far ahead of me that I couldn't see him anymore. Then I looked at the clock and it said 19.19.

VOA: standard.2009.08.21

And she said she had some sort of lung disease and she couldn't get out of Paris and she knew where every tomb was.

她说她有某种肺病,她不能离开巴黎,她知道每座坟墓的位置

耶鲁公开课 - 1871年后的法国课程节选

Because I couldn't agree more with what Sergei said.

VOA: standard.2009.05.07

I couldn't tell what you said, sorry.

我听不清你们说的是什么，不好意思。

麻省理工公开课 - 化学原理课程节选

It must have been that they somehow knew on the issuance date that the stock price was going to go up, but he said they couldn't possibly know that in these general circumstances.

这一定是,他们在发放期权的当日就知道,股价将要上涨,但是李认为在正常情况下,他们是不可能知道的

耶鲁公开课 - 金融市场课程节选

I couldn't quite hear, but I have a feeling everyone said 870 electron volts.

虽然我听不太清，但是我感觉大家回答的都是，870，电子伏。

麻省理工公开课 - 化学原理课程节选