constrain

vt.

1. 強迫，迫使[OZ]
   I feel constrained to write and protest the decision.

   我不得不寫信抗議這一決定。

2. 限制；束縛；拘禁
   Our research has been constrained by lack of cash.

   我們的研究工作因缺少現金而受到限制。

3. 壓制，抑制[（+from）]