常见例句双语例句Tack out the dowel in lower part of handle of the valve, and undraw the agraffe gently. Rotate handle of the valve clockwise to open valve to begin discharging.卸下排液阀手柄下侧的塑料销子， 并轻轻拉开锁扣， 将阀门手柄朝顺时针方向扳动以开始排料； 返回 dowel handle