严重的空气污染警告人类，我们无休止的的生产和使用汽车给我们的地球带来了沉重的负荷。
The severe air pollution alarms humans of the heavy load we have exerted on Earth by our insatiable production and usage of automobiles.
一个旨在确保运行效率的有效检测很简单，就是让系统承载尽可能大的负荷，来测试空气是否在排气口出来时被足够冷却。
A useful test to ascertain operational efficiency is simply to load up the system as much as possible to see if the air is actually cooling at the vents sufficiently.
草坪美化了环境，将声音和空气污染降到最低限度，稳定土壤，通过蒸腾冷却来减少住宅的热负荷。
Turf grass adds beauty to the landscape, minimizes sound and air pollution, stabilizes the soil, and reduces the heat load on homes through transpirational cooling.
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