snap [snæp]

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n.啪地移动，突然断掉；v.猛咬，咬断，谩骂，砰然关上

to cause something which is thin to break suddenly and quickly with a cracking sound

He broke off the twig with a snap. 他啪地一声把那根树枝折断了。
These earrings snap on with special fasteners. 这副耳环是用特制的按扣扣上去的。