expatiate on/upon
基本释义
详述，阐述，细述，细说
实用场景例句
日常对话
Could you give me a hint about the answer to this question?
你能给我这个问题的答案一点提示吗？
校园生活
The teacher dropped a hint that the exam would be difficult.
老师暗示考试会很困难。
社会场景
She gave a subtle hint that she wanted to leave early.
她暗示她想早点离开。
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