二十多年前科学家就已经知道癌症是一种基因病变。
Scientists have known for more than two decades that cancer is a disease of the genes.
此前科学家们正在研究一种特殊的海洋细菌，它能产生分解包寿司的紫菜的酶。
The scientists were studying a particular Marine bacterium, which makes enzymes that break down the kind of seaweed used to wrap sushi.
他指出，目前科学家开始研究一种叫邻苯二甲酸盐的化合物，该化合物广泛用于工业生产，起到增塑剂的作用，一些儿童玩具及医药用品中也含邻苯二甲酸盐。
Dr. Landrigan said scientists start concerned about chemicals called phthalates, widely used to make plastic flexible, and found in baby toys and medical supplies.
中国传统史学是一种具有前科学性质的诗性史学，可以置之于艺术性的视角下进行研究。
Traditional Chinese study of history is a poetic one that possesses the characteristics of pre-science nature and can be probed from the artistic perspective.
很久以前科学家就知道电流是能的一种形式。
目前科学家正在测试该化合物，希望能由此开发出一种能够逆转与衰老有关的记忆力衰退进程的药品。
The compound is being investigated with a view to developing a drug that could slow the natural decline in memory associated with aging.
目前科学家正在测试该化合物，希望能由此开发出一种能够逆转与衰老有关的记忆力衰退进程的药品。
The compound is being investigated with a view to developing a drug that could slow the natural decline in memory associated with aging.
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