明白。这也是to be 和to do 的道理。。这样解释”封城“清晰多了。谢。

来源: 水宁于 2020-02-07 22:08:11 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.