scissors是可数名词吗

　　Watch how you use those scissors ─ you could do yourself a mischief!

　　看你那是怎么用剪刀啊——你会伤着自己的！

　　That's not the right way to hold a pair of scissors.

　　那样拿剪子不对。

　　Snip, snip, went the scissors.

　　剪刀咔嚓咔嚓地剪着。

　　He told me to get some scissors

　　他让我去拿把剪刀。