问题描述：
be known that 什么意思?
lt is known that time is usually limited(有限的）.
这句话的翻译~
O(∩_∩)O谢谢
lt is known that time is usually limited(有限的）.
这句话的翻译~
O(∩_∩)O谢谢
问题解答：
我来补答展开全文阅读