She let the news slip by mistake, in an unguarded moment.
她一不留神泄漏了消息。
She let the news slip by mistake, in an unguarded moment.
她一不留神泄漏了消息。
Cross the road with care.
过马路要留神。
He had been so absorbed with watching the building that he hadn't heard footsteps on the gravel path.
他留神观察那栋建筑，竟没有听见砾
路
的
步
。
：以
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