1、一条牙膏
... a loaf of bread 一条面包 a tube of toothpaste 一条牙膏 a pack of gum 一包口香糖 ...
2、一筒牙膏
...a tub（桶，塑料板，纸杯；盆，洗澡盆，浴缸） of ice-cream 一小桶冰淇淋a tube of toothpaste 一筒牙膏1)a bit 一点儿 ...
3、一管牙膏
...a pair of sunglasses 一副太阳镜a tube of toothpaste 一管牙膏clock 闹钟 ...
4、一支牙膏
...a bar of soap 一块肥皂a tube of toothpaste 一支牙膏a packet of cigarettes 一盒香烟 ...