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[计] 文档自动存储与检索
🗣️ 情景例句
Don't open the door if you don't know who it is.
如果有陌生人敲门不要开门。
To have money is a fear, not to have it a grief.
有钱使人担心，没钱使人伤心。
What's on your mind?
你在想什么呢？