He has a yellow streak in him.

他个性有些懦弱.

辞典例句

There is a yellow streak in every bully.

凡是恃强凌弱的家伙都有几份胆祛.

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Get rid of that yellow streak . Show some courage.

不要害怕,拿出勇气来.

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Bert has a yellow streak in him.

伯特的皮肤有黄色条纹.

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