VERB
预先阻止;抢在…之前行动
If you forestall someone, you realize what they are likely to do and prevent them from doing it.
例句
O'Leary made to open the door, but Bunbury forestalled him by laying a hand on his arm...
奥利里想去开门，但是邦伯里抢先一把摁住了他的胳膊。
Large numbers of police were in the square to forestall any demonstrations.
广场上驻守着大批警察以防止任何示威活动。