It's a useful introduction to an extremely complex subject.
這是對一門極為復雜的學科的有益入門教程。
This album was my first introduction to modern jazz.
這張專輯唱片讓我初次接觸了現代爵士樂。
The introduction of a new tax accounted in no small measure for the downfall of the government.
這屆政府的垮臺在很大程度上歸因于征收一種新稅。
The introduction of a new code of criminal procedure has also slowed up the system.
新刑事訴訟法的.出臺也使系統的效率有所降低。
Michael Jackson, of course, needs no introduction.
邁克爾·杰克遜，當然，眾所周知。