constrict

1. V-T/V-I If a part of your body, especially your throat, is constricted or if it constricts, something causes it to become narrower. 使收縮; 收縮

Severe migraines can be treated with a drug that constricts the blood vessels. 嚴(yán)重偏頭痛可以用一種收縮血琯的葯物來治療。

2. V-T If something constricts you, it limits your actions so that you cannot do what you want to do. 約束

She objects to the constant testing because it constricts her teaching style. 她反對頻繁地測試，因爲(wèi)這約束了她的教學(xué)風(fēng)格。