左翼下垂至与地面成90度角。The left wing dipped until it was perpendicular to the ground.我们被人指责是好战的左翼分子。We were accused of being militant left-wingers.激进分子张贴起海报批评左翼领袖。Activists pasted up posters criticizing the leftist leaders....
The pit is ventilated by a steel fan.矿井中用钢制通风机来保持空气流通。The bathroom is ventilated by means of an extractor fan.这个浴室使用抽风扇通风。The matter should not be hushed up, but freely ventilated.这事不应掩盖起来, 而应该公开自由讨论....