vt. 抑制,控制;约束;制止
restrain 限制,约束
re-,向后,往回,-strain,拉,词源同 constrain,constrict.即拉回,引申词义限制,约束。
That which we restrain we keep within limits; that which we restrict we keep within certain definite limits; that which we repress we try to put out of existence. [Century Dictionary, 1902]