2.Stream 从使用范围来讲,stream的含义最广,它一方面指比river小的小溪、小河,另一方面又可以指凡是流动或流淌的东西,一连串的东西（包括思想意识等）.；例如：
The stream is full of trout.河里有很多鳟鱼.
A stream of water ran off the roof.雨水顺着房顶往下淌.
The music evoked a stream of associated ideas.这段音乐使人浮想联翩.
Streams of people were coming out of the railway station.人群从火车站涌出.
stream of consciousness 意识流
4.creek 小河,支流.窄小且流速较慢的stream,一般比brook大.但在通俗用法中,stream,brook和creek 可以互换使用.例如：
A creek winds through the woods.一条小河从树林里蜿蜒流过.
rivulet 小溪.即一条很小的brook或者stream,也可以叫做streamlet.该词由river加后缀 -let（小）构成.例如：
Tadpoles can be found in this rivulet.这条小溪里能见到蝌蚪.