名詞 snag:

1. a sharp protuberance
2. a dead tree that is still standing, usually in an undisturbed forest
3. an opening made forcibly as by pulling apart
   同義詞：rip, rent, split, tear
4. an unforeseen obstacle
   同義詞：hang-up, hitch, rub

動詞 snag:

1. catch on a snag
2. get by acting quickly and smartly
3. hew jaggedly

1. The negotiations struck a snag when the union leaders asked for paid holidays in addition to the usual wage increase.
   當工會領袖們要求在通常的工資增加之外還應有帶薪假日時，商談遇到了阻礙。
2. I have a snag in my best black tights.
   我最好的一條黑褲襪給劃破了。