初中英语（深圳&香港文达版）第二册听力UNIT3-4

00:00.00] Unit¹ 3
[00:02.90]Part 1
[00:29.75]Part 2
[00:49.53]Part 3
[01:22.60]Part 4
[01:53.76]Unit 4
[01:56.69]Part 1
[02:19.94]Part 2
[03:07.12]Part 3
[03:52.07]Part 4

1 unit   

n.单位，单元，部件，元件，装置

参考例句：

• This unit is very hard.这个单元很难。
• This textbook has twenty units.这本课本有二十单元。