sing a piece of 這實在To show you want the check，make a movement with your hands as if you are singing a piece of paper.當中的，

To call a waiter，raise one hand to head level orabove.Toshow you want the check，make a movement with your hands as if you are singing a piece of paper..
原句錯了，是signing a piece of paper，不是singing.
意思是如果要叫服務生來，就把手舉頭上一點的地方.如果是想買單了，那麼就做一個在紙上簽字的手勢.那麼人家就知道你要買單了.
因為在外國一般是用信用卡要簽字，明白？

sing a piece of 這實在To show you want the check，make a movement with your hands as if you are singing a piece of paper.當中的，

sing a piece of 這實在To show you want the check，make a movement with your hands as if you are singing a piece of paper.當中的，

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