My personal theory is that needs and desires create mental vacuums .
我个人的理论是需求和欲望制造了思想真空。
In venezuela such power vacuums have often been filled by the army .
在委内瑞拉像这样的权利真空通常被军队武装填满了。
The u.s. environmental protection agency obliges contractors to do lead-safe renovations on pre-1978 homes , isolating rooms where work is under way and using special vacuums and masks for dust .
For instance , the minute tardigrade , also known as the water bear and which lives in mosses and other places , is said to be capable of surviving in the severest environments -- extreme aridity , temperature fluctuations of several hundred degrees , vacuums , strong radiation , and even outer space .
