碳的诸多同位素the many isotopes of carbon碳的化合价是4价。Carbon has a valency of 4.通过环氧化和氧化就得到外消旋的含十八个碳的昆虫返动激素.Epoxidation and oxidation gave the racemic C 18 - juvenile hormone....
这些便士钱币是伦敦一家制币厂铸造的.These pennies were coined at the mint in London.最常用来铸造的金属是铁 、 钢 、 铝等.The metals most frequently cast are iron, steal, aluminum and so on.硬币可能大小 、 轻重 、 形状不同, 铸造的金属可能不一样.Coins may be of different sizes, w...
能源节约的理念产生于1973年的石油危机。Energy conservation as a philosophy was born out of the 1973 oil crisis.化工厂提出增产节约的倡仪,其他工厂随即响应.The chemical plant proposed to increase production and practise economy and other factories presently res...
Such parents vacillate between saying no and giving in — but neither response seems satisfactory to them.这类家长举棋不定,对孩子们的无理要求,不知道是该回绝还是该满足,觉得这两者都不理想.Without doubt , the national bourgeoisie tends to vacillate , but we shou...
A boutique and beauty salon are conveniently located within the grounds.时装店和美容院就在区内，非常方便。Conveniently, he had developed amnesia about that part of his life.他得了健忘症，记不起那一段生活了，倒也省心了。They've conveniently forgotten the r...
我试着在等候室里写作文, 但我办不到.I kept trying to write my paper in the waiting room, but it was too hard.就因为这个才没人在等候室聊天, 对 吗 ?This is exactly why people don't talk to each other in waiting rooms, right?我们被领进一间等候室,里面排列着坐上去不太舒服的椅子...
He attends school sporadically.他上学时断时续。Everybody consciously attends to things and everything is attended to.人人自觉管,事事有人管.He attends regular yoga classes.他定期上瑜伽课....
Spike Milligan has finally got the gong he had been promised.斯派克·米利根最终拿到了早就承诺给他的那块奖章。Her first major role was in Martin Scorsese's 'Goodfellas' and she followed this with a part in Spike Lee's 'J...