【英语时差8,16】汗水的咸味从何而来（下）

 But that passage does more than simply carry the sweat to the surface. To avoid losing any more salt than necessary, the walls of the passage take salt out of the sweat so it can be reused by the body. So, when the sweat reaches the surface, it is less salty than when it was first produced in the sweat gland¹. The salt, itself doesn’t help keep you cool, but mixed with water to form sweat, the salt helps draw more water into the sweat gland. Sweating And Efficiency² And the more you sweat, the more efficient the sweat glands³ get at removing the salt before the sweat leaves the body. If you go to a hot climate, you’ll find that after a few days, your sweat becomes less salty. People who live in hot climates may sweat more, but they lose less salt.

1 gland   

n.腺体，(机)密封压盖，填料盖

参考例句：

• This is a snake's poison gland.这就是蛇的毒腺。
• Her mother has an underactive adrenal gland.她的母亲肾上腺机能不全。

2 efficiency   

n.效率，效能，功效

参考例句：

• We were most impressed with your efficiency.你的效率给我们留下很深刻的印象。
• Our goal is to achieve the maximum of efficiency.我们的目标是取得最高的效率。

3 glands   

n.腺( gland的名词复数 )

参考例句：

• a snake's poison glands 蛇的毒腺
• the sebaceous glands in the skin 皮脂腺