只要你细数一下当你选择牙膏时候的选择，你会对结果感到惊讶。
Just the number of options you have when you buy a tube of toothpaste can be overwhelming.
选牙膏的时候要确保它含有氟化物。
When you're choosing a kind of toothpaste, make sure it has fluoride.
他们在表达自己观点的时候常常像挤牙膏一样犹犹豫豫。
They were hesitant to express their ideas and often seemed to be going through the motions.
应用推荐