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。
The introduction of a new tax accounted in no small measure for the downfall of the government.
这届政府的垮台在很大程度上归因于征收一种新税。
The introduction of a new code of criminal procedure has also slowed up the system.
新刑事诉讼法的`出台也使系统的效率有所降低。
Michael Jackson, of course, needs no introduction.
迈克尔·杰克逊，当然，众所周知。