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1·When you're planning the basic structure, do you like to go away to be sure that you're by yourself?

当你在计划基本结构的时候，你是否想要离开以确保你是一个人？

2·When you are struggling to achieve something important you should believe in yourself and be sure that your decision is the best.

当你在努力实现一些重要的事情时，你应该相信自己，相信你的决定是最好的。

3·Whether or not we're successful, we can be sure that we did our best.

不管成功与否，我们确已尽了最大努力。《牛津词典》

4·And you can be sure that when the referee cheats our boys, I'll be ready to lambaste him.

而且你可以放心，如果裁判对孩子们不公平，我会公开斥责他。《柯林斯英汉双解大词典》

5·They've got fruit retailing down to a fine art. You can be sure that your pears will ripen in day.

他们精于水果零售之道。你可以放心，你那些梨一天之内就会熟。《柯林斯英汉双解大词典》

6·Even now we could not be sure that the militants would not find some new excuse to call a strike the following winter.

即使到现在，我们也不能确定这些激进分子不会找到某个新的借口在下一年冬天号召一场罢工。《柯林斯英汉双解大词典》

7·I used to be sure that I would be a singer, said Lily.

“我曾经确信我会成为一名歌手。”莉莉说。

8·Give me your hand, for I want to be sure that you are still here.

把你的手给我，因为我想确定你真的还在这里。

9·One can never be sure that it is not on the point of breaking out into action.

人们永远无法确定它是否即将付诸行动。

10·In what direction, for he could not be sure that the children had been taken to the ship?

究竟往哪个方向走呢？因为他不能肯定孩子们是不是已经被带到船上去了。