back guy短语¹⁴⁴⁹⁷²⁺² 基本例句 支撑 The back guy, the mooring rope, take the thing, to twist the screw even to turn around and so on the ground easy movement, appears in weightlessness outer space is slow and is slow. 拉线、系绳、取物、拧螺丝甚至转身等在地面轻而易举的动作，在失重的太空显得缓慢而迟钝。 kekenet