snap v.劈啪作响，崩塌，砰然关上，猛咬，谩骂，拍摄。
snap的基本意思是指突然地停止一个相当快的猛烈的动作,如咬、夺、抢、抓或打开〔关闭〕,突然破裂等。有时这些动作会伴有尖厉的声音,由此引申可表示“厉声地说”,还可指“拍快照”。

【例句】
This final misfortune caused his mind to snap.
最后这次不幸事件使他的精神一下子崩溃了。

He just can't snap out of the depression he's had since his wife died.
自从他妻子去世以后，他一直无法摆脱忧伤。