地球上的人每秒钟都承受着每平方英寸14.7磅力的气压，而太空服让宇航员所承受的气压只有4.3磅力。
Earthbound humans have 14.7 pounds per square inch of air pressing on them every second of the day. Space suits only put about 4.3 pounds of pressure per square inch on the wearer.
所以120磅的压力平均分为4份，或者每平方英寸30磅的力。
So the pressure would be 120 divided by 4, or 30 pounds per square inch.
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