introduction表说明是可数吗
introduction的复数形式为introductions,introduction为可数名词;
introduction作介绍、引荐时是不可数;
例句
She was punctilious in the matter of introductions.
她在介绍别人时总是举止得体。
Our speaker today needs no introduction.
我们今天的发言人就不必介绍了。
It\'s a useful introduction to an extremely complex subject.
这是对一门极为复杂的学科的有益入门教程。
This album was my first introduction to modern jazz.
这张专辑唱片让我初次接触了现代爵士乐。
On balance, the book is a friendly, down-to-earth introduction to physics.
总而言之,这是一本通俗而务实的物理入门书。
The introduction attempts to yoke the pieces together
导言部分试图将各部分硬拼凑在一起。