sock是可数名词还是不可数名词

　　例句：

　　You're wearing odd socks!

　　你穿的袜子不成双呀！

　　My feet were like blocks of ice despite the thermal socks

　　虽然穿了保暖袜子，我的双脚还是像冰块一样。

　　I put on a new pair of nylon socks.

　　我穿上了一双新尼龙袜。