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[计] 确定基准点, 标记
🗣️ 情景例句
From ...?
打来的人是……
I know the boy whose father is a painter.
我知道那个男孩的父亲是画家。
There's a very important Chinese deer called the milu deer.
有一种非常珍贵的中国鹿，叫做麋鹿。