tending to bring about; being partly responsible for;
"working conditions are not conducive to productivity"
"the seaport was a contributing factor in the growth of the city"
"a contributory factor"
tributary的用法和样例：
例句
用作形容词 (adj.)
Sino-Siamese trade had two forms, tributary trade and civil trade. 中暹贸易主要分为两种形式：朝贡贸易与民间贸易。
Like Silla, Parhae was a tributary state of Tang-dynasty China. 如新罗一样，渤海国是中国唐朝的属国。
About half the 22 Ovimbundu chiefdoms were tributary to a larger chiefdom before Portuguese intervention in the 20th century. 在20世纪葡萄牙人实际占领之前，约有半数酋长领地臣服于一个大酋长。
The software of master station and tributary station are designed by VC ++ and configuration soft. 利用VC++和组态软件设计出了煤矿通风自动化系统的主站和分站软件。
Several rivers are tributary to the Ganges. 有好几条河都是恒河的支流。
There was a tributary road near the end of the village. 村的尽头有条岔道。
