1.
dirty book, joke, etc
下流的书、 笑话等
2.
That's a rotten thing to say!
说这样的话，下流！
3.
The water ran down (the hill) steadily.
水不断往（山）下流。
4.
conspicuously and tastelessly indecent.
露骨、煞风景、下流。
5.
Obscene language or subject matter.
污秽的言行下流话或下流行为
6.
Using abusive or obscene language.
说话下流的用骂人的或下流的语言的
7.
Racy or scandalous gossip.
流言粗鄙下流或造谣中伤的流言
8.
makes them sort with mean company;
使他们与下流人为伍；
9.
telling those mucky stories of his
讲他那些下流的故事.
10.
a vulgar gesture,suggestion, joke
下流的手势、 示意、 笑话.
11.
"What a low, vulgar girl!"
“多低级、多下流的女孩子
12.
a current below the surface of a fluid.
流体的上流层以下或表面以下的流动。
13.
A current, as of air or water, below another current or beneath a surface.
潜流处天于另一流层下的急流或水流
14.
updraft and downdraft
上曳气流和下曳气流
15.
input current at positive-going threshold voltage
正向阈电压下输入电流
16.
A tear trickled down her cheek.
一滴眼泪流下她的脸颊。
17.
weep bitter tears of remorse.
流下悔恨痛苦的泪水
18.
bathyrheal underflo
地壳下部补偿物质流