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1·Not once did it occur to Michael that he could one day become a top student in his class.

迈克尔一次也没有想过有一天他会成为班里的尖子生。

2·NASA refused me not once, not twice, but eleven times!

美国国家航空航天局（NASA）拒绝了我，不是一次，也不是两次，而是十一次！

3·The mamba will strike not once, but repeatedly, injecting large amounts of potent neuro- and cardiotoxin with each strike.

黑曼巴不会立即发起攻击，但是会不断地，释放大量的强力神经和心脏毒素。

4·Not once in three months!

三个月，一次也没有！

5·They did not once look back.

他们一次也没回头。

6·Not once a day, but twice a day.

一天还不止一次，两次。

7·Not once had we written to each other.

我们彼此间没有写过一封信。

8·He did not once mention the car industry.

他一次也没有提到汽车业。

9·His parents replaced it not once, but three times.

父母给他重新买了，不是一次，而是三次。

10·Not once a day, but twice a day. Sometimes three.

不是一天一次，而是一天两次，甚至是三次。