We drew up that contract, right? - Yes.

合同是由我们拟定的 对吗 -没错。

And I don't think I can sign this contract right now.

我认为我现在无法签署这份合同。

And what would occur if I do not sign this contract right now?

如果我现在不签署这份合同会发生什么？

I've got your contract right here. Come this way.

规则我已经听白龙说过了。

In a healthy heart, the left and right ventricles contract and relax simultaneously.

在健康的心脏中，左右心室同时收缩和松弛。

So the market makers have to go out into the market and take the inverse action to offset the bet that they've made by selling you a contract, right?

因此，做市商必须进入市场并采取相反的行动来抵消他们通过向您出售合约而做出的赌注，对吧？

That first heart sound, " lub" , is called S1, and the noise comes from the tricuspid and mitral valves snapping shut when the left and right ventricles contract, which happens at about the same time.

第一心音“lub”叫做S1，是在左、右心室同时收缩，三尖瓣和二尖瓣关闭时发出的声音。