play an important role造句
They also
play an important role in immune reactions.
它们在免疫反应中也起着重要的作用.
Nonbiological degradation processes
play an important role in the dissipation of many pesticides in soil.
非生物降解过程在消除土壤中的许多农药方面起着重要的作用.
Variational principles
play an important role in the formulation of many problems of mathematical physics.
变分原理现在许多数学物理的表述中起着重要作用.