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英语学习

Off the top of my head. Last time I checked.

off the top of my head - from quick recollection, or as an approximation; without research or calculation; 好象是。。。差不多是。。。 通常是要提供具体数据和情况的时候,但是可能不太确定自己记得的是不...澳洲华人论坛