她走在街上时，两个抢项链的人突然从她脖子上扯走了金链。

While walking on the street, two ___chain-snatchers suddenly grabbed the gold chain from her neck.

警方警告市民要提防骑摩托车的飞车抢夺者。

The police warned people to beware of motorcycle-riding ___chain-snatchers.