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1·He made an unsuccessful run for governor in 2005.

2005年他竞选州长失败。《牛津词典》

2·The climbers face certain death if the rescue today is unsuccessful.

救援行动如果今天不能成功，登山队员必死无疑。《牛津词典》

3·Unfortunately attempts to crossbreed it with other potatoes have been unsuccessful.

不幸的是，将它与其他土豆品种杂交的尝试均告失败。《柯林斯英汉双解大词典》

4·His attempts to peddle his paintings around Laramie's tiny gallery scene proved unsuccessful.

他在拉勒米的小画廊现场周围兜售其画作的企图证明不成功。《柯林斯英汉双解大词典》

5·The difference between successful and unsuccessful people is that successful people put into practice the things they learn.

成功者和失败者之间的区别是成功者将他们所学的东西付诸于实践。《柯林斯英汉双解大词典》

6·A new collection of photos brings an unsuccessful Antarctic voyage back to life.

一组新的照片让一次不成功的南极航行恢复了生机。

7·They lose, and they're forced to surrender Azov to the Turks after an unsuccessful war.

他们失败了，战争失败后，他们被迫投降将亚速海交给土耳其人。

8·Fail—a noun or interjection used when something is egregiously unsuccessful—was 2009's the most useful word.

失败——“名词或感叹词，当某事非常不成功时使用”——被评为2009年最有用的单词。

9·His efforts were unsuccessful.

他的努力没有成功。《柯林斯英汉双解大词典》

10·Their legal challenge was unsuccessful.

他们的法律质疑未获成功。《牛津词典》