The body screw back into place, gently open the little front-endball valve, using compressed air to the drainage system of impurities, water, oil draining;
将阀体拧回原位，前端球阀轻轻打开一点，用压缩空气将排水系统内的杂质、水油排空；
2
Can you kick the ball to the other end of the football field?
你能把球踢到足球场的另一端吗？
3
Then he fastened a small metallic ball on each end of the steel bar.