Forster established the essentiality of minerals as accessory food factors required for maintaining life.福斯特证实了矿物质作为辅助食物因子在维持生命方面的重要性。Therefore , this kind of development view is not continuable in essentiality.这种发展观在本性上...
外面车行道上传来刺耳的刹车声。There was a scream of brakes from the carriageway outside.为避免相撞而刹车时，他听到了轮胎与地面刺耳的摩擦声。He heard tires squeal as the car braked to avoid a collision.刹车踩得越用力，车子减速越猛。The harder the brake pedal is pressed, the gr...
At times only the tip of the high pylons were visible above water level.有时候只能看见高出水面的塔门尖顶.Who designed the arch bridge with granite - faced pylons at either end?谁设计在拱桥两端镶有花岗岩的塔门?The paper introduces overall arrangement, s...