[ti:]

[ar:]

[al:]

[by:听力课堂～www.tingclass.net]

[00:02]specimen 样本，标本

[00:14]involve 包含，含有

[00:27]compose 组成，构成

[00:40]consist 组成，构成

[00:53]constitute 组成，构成

[01:09]attribute 把…归因于，把(过错、责任等)归于

[01:26]