Time or opportunity lost will return no more.机不可失,时不再来.
问题描述：
Time or opportunity lost will return no more.机不可失,时不再来.
lost?function
答
完整的句子是Time or opportunity which/ that is lost will return no more,补全的是一个定语从句,修饰前面的time or opportunity,省略后剩下的lost可以看作是把动词的过去分词后置作定语.