These cells are fascinating. They have four properties.

这些干细胞非常有趣， 它有4种特质。

But instead of talking about each of those relationships individually, it lets you relate all four properties of a gas -- including how much gas you have.

但不是单独谈论这些关系 它将您与气体的四个属性以及您拥有的气体量相关联。