[ti:]

[ar:]

[al:]

[by:听力课堂～www.tingclass.net]

[00:01]piston 活塞

[00:11]plead 为…辩护

[00:21]dread 恐惧，担心

[00:31]stead 替代;有用

[00:42]plural 复数的;复数

[00:54]rural 农村的

[01:03]senate 参议院，上院

[01:15]