for that same pressure drop I get less flow.

同样的压力下流速会变小
Imagine your--whatever your favorite beverage is,

想象一下你...无论你喜欢哪种饮料
think about a milkshake

就想想奶昔吧
because those are difficult to draw through straws.

因为用吸管吸奶昔是很困难的
If you're going to drink a milkshake in your favorite flavor,

如果你正在喝自己喜欢口味的奶昔
do you hope you get a narrow straw or a big, thick straw?

你希望用一根细吸管还是又大又粗的吸管
You would not pick the narrow straw if you really like the milkshake

如果你真的喜欢奶昔的话你会用细吸管
because you can only generate a certain pressure drop with your mouth.

因为用嘴吸产生压差是一定的
If you generate that pressure drop

在用嘴去吸饮料时
you're not going to get much milkshake,

你并不想一口喝进太多饮料
you're not going to get much flow.

不想产生太大的流速
If I have a bigger tube,

如果用一支大吸管