•The introduction of new working practices has dramatically improved productivity.采用新的工作方法已经显著提高了生产率。

•Within a few years of their introduction, CDs were outselling vinyl records.雷射唱片在推出几年后，销量就超过了黑胶唱片。

•You'll have to do/make the introductions - I don't know everyone's name.你要作个介绍——我可不知道每个人的名字。

•My next guest needs no introduction (= is already known to everyone).我的下一位客人大家都认识，就用不着介绍了。

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•Have you read the introduction to the third edition?你看了第三版的绪论吗？

•The song's great, but the introduction's a bit too long.这首歌很棒，但前奏部分太长了。