Introduction is of great importance since it sets the tone for the speech.

开场白很重要，因为它为演讲奠定基调。

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Football fans and analysts for years have called for the introduction of video replays to allow referees to review controversial calls.

VOA: standard.2010.06.29

I've been teaching this stuff for twenty years, and I tend to find two basic kinds of students who shop my classes for the New Testament Introduction course.

这门课我上了20年，发现所有参加新约导论的学生,大致可归为两类。

耶鲁公开课 - 新约课程节选

So an introduction is not only valuable for those of us who simply wish to acquire knowledge.

所以入门课不仅对那些,想获取知识的人很有价值。

耶鲁公开课 - 文学理论导论课程节选

The FSA officials expanded on plans for a consultation on the introduction of legislation for a food hygiene ratings scheme.

BBC: Fire and Rescue Service logo

Mr McNeil said it would take a combination of efficiency savings, consolidation of services between councils, the introduction of charges for council services and unrolling the methods of the best performing councils across all 32 local authorities in Scotland.

BBC: Local government finance inquiry debate

To keep this tradition viable, festivals, contests and various other activities already organized by the Government of Uzbekistan and the local authorities are to be reinforced through the introduction of programmes for transmitting the tradition to young people and research (creation of a database, organization of conferences, publications, etc.).

UNESCO: Culture