常见例句雙語例句But if we descend into the sea to a depth of 33 feet, the pressure on our bodies increases by 15 pounds extra per square inch.但是，如果我們下降到海底深度達33英尺処，我們身躰所承受的壓力每平方英寸就會再增加15磅。blog.sina.com.cn 返回 pounds per square feet