It's an exceptionally fast, shallow, tubular and heavy wave.

这是一个异常快速、浅、管状和沉重的波浪。

Your brain waves slow down a bit too, with the alpha rhythm of rather fast waves predominating for the first few minutes.This is called stage 1 sleep.

除了开始几分钟比较快的α节奏外，脑电波也稍有减缓。这被称为第一阶段睡眠。

And although the deer were able to keep up with the faster green wave, the nutritional value was lower—leaving the animals less prepared for the challenges of the year ahead.

尽管北美黑尾鹿能跟上加速的绿浪，但其食物的营养价值变低了，导致鹿群对未来一年的挑战准备不足。