AS-levels的意思|示意

Their physiological arousal also declined quickly to the same levels as those of the control subjects.

他们的生理反应也迅速下降到与对照组相同的水平。

They should not, as the levels of education offered by different vocational schools are unequal.

他们不应如此，因为不同职业学校提供的教育水平是不等的。

The narrow strips of beach on which the turtles lay their eggs are being squeezed on one side by development and on the other by the threat of rising sea levels as the oceans warm.

海龟产卵的狭长海滩一边受到开发的挤压，另一边受到海平面上升的威胁，因为海洋变暖。

As a result, the pollutants generated in most households seldom build up to dangerous levels.

因此，大多数家庭产生的污染物很少能达到危险水平。

In laboratory simulations of challenging activities such as driving, those who felt in control of their lives pumped out lower levels of stress hormones such as cortisol.

在实验室的挑战性活动（比如驾车）的模拟中，那些觉得生活在自己的掌控之中的人产生的应激激素（比如皮质醇）更少。

If water levels fall in summer, as they do in most of North America, then beavers' lodge entrances may be exposed.

如果像北美大部分地区一样夏季水位下降，那么海狸的小屋入口就会暴露出来。