play an important role to

Recently years many experiments have observed that certain ectogenesis factors play an important role to protect neurons.

近年的很多实验表明：某些外源性因子对保护神经元存活有重要作用。

Circular polarization microstrip antenna has many excellent properties, which in wireless applications play an important role to play.

圆极化微带天线具有很多优良的特性，因而在无线应用中扮演着十分重要的角色。

At the same time, all the way Wilson has become the standard operating procedures, the confrontation with the KGB play an important role to play.

与此同时，威尔森的种种方法已经成为标准行动程序，在与克格勃的对峙中发挥起重要作用。