深夜
word C2- very late at night
From the library
不多久，松柏林早在船后了，船行也并不慢，但周围的黑暗只是浓，可知已经到了深夜。
只我在这深夜，啊，为谁凄惘？
有时候，为了完成任务，他甚至会一直工作到深夜十二点。
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