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....
Most of the wine was unfit for human consumption.这些酒中大部分都不适于人类饮用。The wine towns encountered are, on the whole, quiet and modest.所到的酒镇总的来说都是宁静祥和的。Knox had taken it on himself to choose the wine.诺克斯擅自作主，选了葡萄酒。...
男孩吮吸着拇指，瞪圆了大眼睛盯着赫本。The boy sucked his thumb and stared at Hebburn with huge, round eyes.大家都知道赫本是一位人道主义者。Hepburn is known as a great humanitarian.大约在1955年拍摄,赫本在一片平静的树林里写信.Audrey Hepburn composes a letter in a palm grove, ...