Glad to hear that.

来源: 婉蕠 于 2009-12-30 10:39:25 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (71 bytes)
回答: 地道英语：pop out & pop in（英语听力） 由 婉蕠 于 2009-12-30 09:12:52

It may be used more often in British English than in American English.

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