留美老师带你每日说英文 第463期:睡眠的主要功能

 台湾籍旅美老师今天交给我们的句子是：

Sleeping isn't lost time, or just a way to rest when all our important work is done. Instead, it's a critical function, during which your body balances and regulates its vital systems, effecting respiration¹ and regulating everything from circulation to growth and immune response.

睡眠不是浪费时间，或只是完成重要工作后的喘息。相反的，睡眠最主要的功能是维持、调节身体重要系统的平衡。它可以影响你的呼吸、血液循环、人体生长以及免疫反应。

1 respiration   

n.呼吸作用；一次呼吸；植物光合作用

参考例句：

• They tried artificial respiration but it was of no avail.他们试做人工呼吸，可是无效。
• They made frequent checks on his respiration,pulse and blood.他们经常检查他的呼吸、脉搏和血液。