查词历史：

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of no concern
生词本

1. We are against the irresponsible attitude of standing aloof from things on the ground that they're no concern of ours.
我们反对事不关己，高高挂起的自由主义态度。

来自《现代汉英综合大词典》

2. It's no concern of mine.
这不关我的事。

来自《用法词典》