单词：precursor fiber
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[00:14.15]Roofer [00:19.31]房顶工人 [00:31.61]I worked in the basement of a Caltech campus building [00:35.17]that had been periodically haunted [00:37.88]by the specter of the upper half of a roofer [00:41.07]who had fallen from the six story roof [
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Science and Technology LSD Acid tests 科技 麦角酸二乙基酰胺 迷幻药之考验 Research into hallucinogenic drugs begins to shake off decades of taboo 迷幻药物的研究开始摆脱几十年来的禁忌 THE psychedelic era of the 1960s i
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KHARTOUM, Jan. 5 (Xinhua) -- Chairman of the U.S. Senate Foreign Relations Committee John Kerry on Wednesday said that a successful referendum(公民投票权) in south Sudan would be the precursor（先驱,前导） to a stronger new relationship be
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Europe 欧洲 Energy in Ireland: Bog down, wind up 爱尔兰能源：停顿，关闭 Ireland is ditching peat for energy from wind. 爱尔兰正从泥炭能源转向风能。 Peat has a lot to recommend it. 这个岛国的目标是成为电力净出口
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