把球放在正方形里面。
He ran square from the left before flicking the ball through at a right angle.
他从左路内切，然后轻弹皮球精准地挑射入网。
We should get together and watch the ball drop in Times Square.
我们应该聚在一起在时代广场看投球。
The square nut for ball valves is made from PVC.
用于球阀的方形螺母由PVC制成。
Japanese ball screw rod and round rail, original screw nut, imported linear and square rail.
日本产滚珠丝杠，原配螺母，进口直线方形导轨。
Japanese ball screw rod and round rail, original screw nut, imported linear and square rail.
日本产滚珠丝杠，原配螺母，进口直线方形导轨。
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