He cheerfully ignored medical advice which could have prolonged his life.

他对本可能延长他寿命的医疗建议乐观地置之不理。

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And they are known to have used wooden pulleys, which could have been made strong enough to bear the weight of massive blocks of stone.

人们知道他们使用的是木制滑轮，这种滑轮可以被制造得足够坚固来承受大块石头的重量。

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By dropping out after studying for a period of time, the two students have wasted educational resources, which could have been provided for others.

两名学生学习一段时间后辍学，他们浪费了本可以提供给其他人的教育资源。

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And the dymaxion car -- which could have provided safe, pollution-free transportation using little gasoline -- was never produced.

VOA: special.2010.05.30

He could take our molecules which have been scattered, put them back together, " and say "Ha, that's your body."

他可以收起,我们散落的分子，将它们重组，然后说“看，那是你的肉体“

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And the bond order you get out will either be, for example, zero, which would mean that you have no bond, 5 or you could have 1, a single bond, 1 . 5, a 1 and 1/2 bond, 2, a double bond, and so on.

你得到的键序要么是比如说是零，这意味着没有键，或者你会得到1，单键1。,1又二分之一键，2，一个双键，等等等等。

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"It was one of those matches which could have gone either way, " he said.

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Kidney failure may be from diabetes or hypertension, both of which could have been preventable.

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Professor Dee said educationalists should "hesitate" before advocating more single-sex classes, which could have other "drawbacks".

BBC: NEWS | UK | Education | Male teachers 'better for boys'