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1·The notes are intended as an introduction to the course.

这些笔记的目的是作为对这门课程的介绍。《牛津词典》

2·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。《牛津词典》

3·The book is a friendly, down-to-earth introduction to physics.

这是一本简明、实用的物理学入门书。《柯林斯英汉双解大词典》

4·Introduction to Chemistry aims to cover important topics in organic chemistry.

《化学入门》意在论及有机化学的重要问题。《柯林斯英汉双解大词典》

5·Could you get me an introduction to your friend?

你能给我介绍一下你的朋友吗？

6·If so, read the introduction to the 5 Best Animation (动画) Studios.

如果是这样，请阅读五大最佳动画工作室的介绍。

7·This book is the perfect introduction to the seven continents.

这本书是对七大洲的完美介绍。

8·I think at the beginning of each book a brief introduction to it is necessary.

我认为每本书开头的简短介绍都是很有必要的。

9·He shook the paws of both of them warmly, never waiting for an introduction to the Mole.

他热情地握着他俩的爪子，从不等鼹鼠莫尔来介绍。

10·I see this as a course that's an introduction to the literature of a period, to modern poetry.

我认为这是一门关于某个时期的文学和现代诗歌的入门课程。