预: Ⅰ副词(预先; 事先) in advance; beforehand 短语和例子预约 make an appointment; 预祝成功 wish sb. success; 他们将预付一百三十法郎。 they will pay a hundred and thirty francs in advance. 勿谓言之不预。 do not say that we haven't
Example Sentences:
1.
This essentially implies that the presheaf is a sheaf . 这实质上蕴含着预层是一个层。
