动词短语
中文翻译：使变薄
同义词：
['thin', 'thin down', 'reducein thickness']
例句：
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1. Theold tree is slowly thinning out itsbranches.
这棵老树正在慢慢变薄其树枝。
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2. The paint needs to bethinned out before it can be applied.
在涂抹之前，油漆需要被稀释。
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3.As the season changed, the leaves onthe trees thinned out.
随着季节的变化，树上的叶子变薄了。