He ought, to be sure, to have read over his lesson again, but that, you know, he could not do.

他当然应该再复习一遍功课，但你知道，他做不到。

youdao

It sounds like you could do with an assistant but that's obviously not possible, so what about having an online system that students can use to do their scheduling?

听起来你需要一个助手，但这显然是不可能的，那如果有一个在线系统来帮助学生做他们的日程安排呢？

youdao

Some days they could spend hours happily together without any argument, but other days they just could not agree on what to do.

有些日子他们没有任何争吵，可以在一起快乐地度过几个小时，但是有时候她们对于接下来做什么不能够达成一致意见。

youdao

Mister Ramirez might not have been able to express himself in English, but he could do so with his art.

VOA: special.2010.04.14

Or it could be not having to do with the cells themselves but maybe the environment that the cell finds itself in.

这种不同也可能和细胞本身无关,而和细胞所处的环境的变化有关

耶鲁公开课 - 生物医学工程探索课程节选

So I could do it empirically, but I don't want to do that typically, it's just not a great way to get at it. And so in fact, what we want is exactly what the young lady said.

我可以凭借经验来做,但是我不想那么来,因为那并不是一种好方法，并且实际上,我们想要的和这位年轻女士说的确实相同。

麻省理工公开课 - 计算机科学及编程导论课程节选

The explanation for this expansion of the central bank is obvious: Faced with crisis in concerns in the market and the economy, they felt they had to do what they could do (not just central bank but the Treasury as well, to take action to stop deterioration and promote stability).

FORBES: Magazine Article

On Tuesday its spin machine was working hard to send the message that it didn't need to raise capital but could if it wanted to, and it might do just that, but not because more capital was required.

FORBES: Lehman Doesn't Need The Money

One or the other could not have gotten him to where he is, but both together could do it.

FORBES: Beating The Market Takes More Dumb Luck Than Skill