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1·Though she gave no sign, I was sure she had seen me.

尽管她没有示意，我还是确信她看见了我。《牛津词典》

2·That's Wendy, she said, but still she was sure it was the dream.

“那是温迪。”她说，但她仍然相信那是梦。

3·While Lara was confident it was black, Tara was sure it was white.

劳拉确信它是黑色的，而塔拉确信它是白色的。

4·The researcher noted that the dolphin is quite eager to press the paddle when it was sure of the answer, but exhibited hesitation during difficult trials.

研究人员注意到，海豚在确定答案时会很着急地按下踏板，但在难度高的测验中则表现出犹豫。

5·He was sure that the man was innocent of any crime.

他确信此人是清白无罪的。《柯林斯英汉双解大词典》

6·He was sure that the casualness of the gesture was deliberate.

他确信那似乎漫不经心的姿态是有意装出来的。《牛津词典》

7·I was sure she knew the answer but for some reason she hung back.

我敢保证她知道答案，但不知为什么她不敢说出来。《牛津词典》

8·In public he supported the official policy, but privately he was sure it would fail.

他明里支持这项官方政策，但暗中却相信它会失败。《牛津词典》

9·The artist was sure he would.

画家确信他会的。

10·I was sure he wouldn't choose me.

我确信他不会选择我。