tributary

支流

Several tributaries feed into the river before it reaches the sea.

这条河在入海之前汇集了好几条支流。

进贡国、属国、朝贡者历史

The empire collected silk and grain from its tributaries each year.

该帝国每年向各属国征收丝绸与谷物。

支流的

The map shows every tributary stream in the valley.

这张地图标出了谷地里所有的支流溪水。

进贡的、附属的历史

The kingdom remained tributary to its powerful neighbor for centuries.

这个王国数百年来一直向强邻进贡称臣。