[jū shù]

use restraint
加以拘束

Don't restrict her proper activities.
不要拘束她的正當活動。

feel ill at ease
感到拘束

look ill at ease
顯得拘束

speak without restraint
毫無拘束地講話

We felt a little constraint with the new teacher for the first day or so.
在開頭一兩天， 我們對新教師感到有點拘束。