轻型飞机飞行时起落架不一定缩回.The undercarriage on light aircraft does not always retract in flight.男孩看见那条蛇吓得猛地缩回.The boy started back in fear when he saw the snake.但是现在要缩回来当然为时已晚.But it was too late then, of course, to back out....
Objective : To evaluate the feasibility of acute normovolemic hemodilution combined controlled hypotension in meningioma surgery.目的: 评价急性等容血液稀释复合控制性降压在颅脑手术中应用的可行性.Postural hypotension associated with Furosemide may be en...
屋宇起平地，耕野生人烟。Signs of habitation appeared and the fields gave way to houses.劳动者们一边耕犁稻田一边唱歌。Workers were singing as they tilled the rice paddy fields.农民让土地休耕现在得到了回报。Farmers are now paid to let their land lie fallow ....