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🗣️ 情景例句
Many business people turn off their pagers and cell phones during their leisure time.
许多商人在他们的休息时间里都把传呼机和移动电话关掉。
How long have they been married?
他们结婚多长时间了？
This is because the surface of the earth is not flat but round.
因为地球表面不是平的，而是圆的。