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航空导航图
🗣️ 情景例句
His studies haven't been inproving lately.
他的学业最近没什么进步。
I'm twenty-one years old.
我21岁。
My name is Wu Jun. This is our first lesson, so I don't know all your names.
我叫吴军。这是我们第一次上课，所以我认不全你们的名字。