introduction造句
Millions of words have been written about the
introduction of the euro.
有关采用欧元的文章已经有很多。
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 camera has undergone only two minor tweaks since its
introduction.
那款相机自从推出以来仅经过两次小的改进。