尽量不要高声喧哗或是不自然地讲话。Try to avoid shouting or speaking unnaturally.在公共汽车上大声喧哗是一种粗鄙的行为.Talking loudly on a bus is a sign of vulgarity.周未时,海滨上满是喧哗的游客[度假者].At weekends the beach is crowded with noisy trippers....
从主光轴外伸端向泵看, 为顺时针扭转.Overhang from the spindle to the pump to see, for clockwise rotation.确保外伸支架全部伸出并稳固于地面上.Make sure outrigger were fully extended and installed on firm pad.从主轴外伸端向泵看,为顺时针旋转.From the pump shaft to watch ou...