这一光荣传统在他们目前的斗争中起着很大作用。
This proud tradition now avails them well in their present struggles.
森林覆被率在保持水土、涵养水源、改善生态环境方面起着很大作用。
The rate of coverage of forest have an evident effect on many environment factors such as soil and water reservation ecological environment improvement.
剃齿刀是齿轮加工中的精加工刀具之一，选择最优的剃齿刀参数对提高齿轮加工效率和加工质量起着很大作用。
How to choose the optimal shaving cutter parameters is crucial to improve efficiency and processing quality of the gear processing.
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