他们肯定会知道，爱相比空气，更适合呼吸。
他求她不要这样做，因为他知道这肯定会暴露他们。
He begged and prayed her not to do so, for he was sure it would betray them.
如果知道你家里有核武器，他们在破门而入之前肯定会再三考虑。
If somebody knows you have a nuclear weapon in your house, they're going to think twice about breaking in.
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