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n. [医]经期延长
🗣️ 情景例句
The selection here is very large, it may be difficult to choose.
这里有很多式样可以选，可能很难决定。
A little knowledge is a dangerous thing.
浅学误人。
Hi, this is Steve. Is Pippa there?
你好。我是史蒂夫。皮帕在那吗？