【英语时差8,16】脱水（下）

The biggest reason it’s bad to lose too much water is that the actual volume of your blood goes down. When blood volume goes down, blood pressure goes down. As blood pressure goes down, body heat goes up, because your blood helps regulate¹ your core² body temperature. Without enough blood, you can’t cool off. Pretty soon you overheat. So various factors, from eating to circulatory health to the ambient temperature, play a part in how long you could go without water. Probably the biggest factor, though, is simply age: young people are much more likely to overheat faster than adults, which is why it’s especially important to keep an eye on the little ones on hot summer days.

1 regulate   

vt.管理，控制，调节，调校，调整

参考例句：

• This system can regulate the temperature of the room.这种系统能调节室内温度。
• They regulate the flow of water by the sluice gate.他们用水闸门控制水的流量。

2 core   

n.中心；核心；(苹果、梨等果实的)果心

参考例句：

• We didn't get to the core of the subject.我们没触及问题的核心。
• The pear is rotten to the core.这梨全烂了。