The mother kept a watch over the sick child all night.母亲整夜照顾生病的孩子.They kept a careful watch over the vineyard throughout the growing season.在整个生长季节,他们都认真地守着葡萄园.The guards were originally hired to watch over the houses as...
It was a gray scene, greasy gray, and the rain drizzled greasily on the pavement stones.那是个灰色的场面, 阴沉的灰色, 细雨阴沉地洒落在铺路石上.He's a real Dorian Gray, apparently untouched by the ageing process.他像是不受衰老过程的影响，青春永驻。During all ...
Owing to the bad weather, we didn't go to the park.由于天气不好, 我们没有去公园。Stimulation of the autonomic nervous system can occur owing to hypoxia or hypercarbia from depressed ventilation.自主神经系统兴奋作用的发生是由于通气受阻而导致的低氧血症和高碳酸血症引...
Phenols and anilides can be nitrated with very dilute nitric acid.酚类和酰基苯胺能被极稀的硝酸硝化.Aquatint: It is an etching process on copper or steel by means of nitric acid.水彩色调: 用硝酸在钢片或铜片上作腐蚀的蚀刻法.Aliphatic hydrocarbons can be nitra...