'it shall not be in vain.
“不会不起作用的。
reciprocal action and reaction.
互起作用的行动和反应。
It can behave either as an acid or as a salt.
它或起酸的作用或起盐的作用。
Should it play a greater or lesser role?
是要起更多的作用，还是起少一些作用？
Her words had a soothing effect.
她的话起了安慰的作用。
It holds the water for the system.
它主要起储水的作用。
His words were taking effect, which was clear.
他的话在起作用了。
The medicine you gave me has done me Yeoman's service.
你给我的药大起作用。
His charm doesn't work on me, ie doesn't affect or impress me.
他的魅力对我不起作用。
An oar often acts as rudder.
桨常常可以起舵的作用。
the act of applying a bandage.
用绷带包起来的动作。
The phosphate also acts as a binder.
磷矿还起胶结剂的作用。
There were other forces at work, too.
还有别的因素在起作用。
Sediments acted as a restricting control.
沉积层起着屏蔽的作用。
Blacks comprised an important part.
黑人起了重大的作用。
paper cuts for decoration,
起装饰作用的剪纸、
His talk cut no ice with me.
他的谈话对我不起作用。
a noun performing a verbal function
起动词作用的名词.