She acts as if she knows everything.

她的行为表现得好像她什么都知道。

The teacher acts as a shaper of young minds.

老师是年轻心灵的塑造者。

The snow acts as a mantle over the landscape.

雪像一层覆盖物覆盖在景观上。

This drug acts as an inhibitor of the enzyme.

这种药物作为一种酶的抑制剂起作用。

The new policy acts as a blocker to innovation.

新政策成为创新的障碍物。

She acts as a guardian for her younger siblings.

她充当她弟弟妹妹的监护人。

The rubber coating on wires acts as an insulator.

电线上的橡胶涂层起到绝缘体的作用。

The ice pack acts as a reliever for the swelling.

冰袋作为肿胀的缓解物。

The drug acts as an agonist in the nervous system.

这种药物在神经系统中起激动剂的作用。

Coffee acts as a stimulant to help you stay awake.

咖啡作为一种兴奋剂帮助你保持清醒。