硅酮隆胸植入物a silicone breast implant一种叫作吡啶酮的新型抗艾滋病药物能促使艾滋病毒变异，使其不能繁殖，也不会再感染新的细胞。A newer anti-HIV drug called pyridinone caused HIV to mutate into a form which could not reproduce or infect new cells.所有的主要难点都涌现在烯酮 ( 1 ) 的合成中....
The director sailed in, demanding to know who had disobeyed his orders.主任盛气凌人地走进来, 查问是谁违背了他的命令....a naughty boy who often disobeyed his mother and father...一个经常和父母对着干的淘气男孩Jack disobeyed his father and went to the cinema....
The Sri Lankans have been having no luck with the weather.斯里兰卡人在天气方面运气一直很差。Many Sri Lankans kill themselves by eating the seeds of the yellow oleander, a common shrub.许多斯里兰卡人就是通过吃黄色夹竹桃(一种普通的灌木)的种子丢掉自己的性命.About twenty tho...
The plane nosed into the hangar.飞机缓缓地进入机库.The airport hangar was freshly painted.机场的飞机库是新油漆过的.The flying - off platform was to be provided on the roof of the hangar.机库的顶篷是飞行甲板....