constrain vt. 強迫，抑制，拘束
例句：Extremely cold weather constrains plants 'growth.
寒冷的天氣抑制了植物的生長。
curb n. 抑制
例句：The public demanded a curb on military spending.
公眾要求限制軍事開支。
yoke n. 軛，軛狀物，套，束縛，支配 v. 把……套上軛，結合，連接
例句：The farmer was yoking his oxen to a plough.
農(nóng)夫正在用軛把牛套到犁上。
refrain n. 重復，疊句，副歌 vi. 節(jié)制，避免，制止
例句：I wish Ben would refrain from scattering his ash all over the carpet.
我希望本不要將煙灰往地毯上亂彈。
constraint n. 約束，強制，拘束
例句：She showed constraint in the presence of the strangers.
抱在陌生人面前顯得很拘束。