Aurora生物燃料公司的魏斯曼自从上个世纪70年代的石油危机以来一直在研究种植海藻作为燃油的可能性。
Joseph Weissman of Aurora Biofuels has been researching the potential of growing algae as a potential source of fuel oil since the oil crisis of the late 1970s.
自从上个世纪40年代孤独症开始为人所知以来，一个普遍接受的观念就是男性患者大大多于女性患者。
Ever since autism was first identified in the 1940s it has been accepted that autistic males heavily outnumber females.
自从上个世纪70年代以来，全球日益严重的环境问题越来越受到人们的重视。
The global increasingly severe environmental problems have got people's attention more and more since the 70's of last century.
自从上个世纪末到新世纪以来，指责中国当代文学创作的批评声不绝于耳。
From the end of last century to the new century, contemporary Chinese literary creation has been receiving criticism all the time.
自从上个世纪30年代以来，海洋声学监测仪一直在提供有关地球振动的信息。
Ocean acoustic monitors have been providing information on the earth's vibrations since the 1930's.
自从上个世纪90年代以来，科学家们已经试验了各种可能抑制耐药疟疾蛋白的化合物。
Since the 1990s, researchers have been experimenting with chemicals that seem to block the malarial proteins that confer drug resistance.
自从上个世纪90年代以来，科学家们已经试验了各种可能抑制耐药疟疾蛋白的化合物。
Since the 1990s, researchers have been experimenting with chemicals that seem to block the malarial proteins that confer drug resistance.
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