理虧心虛的意思

因理由不充分而擔心。

[feel apprehensive because one is not on solid ground; be not on solid ground; have a guility conscience because justice is not on one's side] 因理由不充分而擔心

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理由：

事情為什么這樣做或那樣做的道理：理由充足 ㄧ毫無理由。