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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Every year, scores of manatees are killed by boats in Floridas waters. Their plight is an ecological concern. And everyone from marine biologists to Marg
发表于:2019-01-08 / 阅读(95) / 评论(0)
Scientific American(十一)月
今天我们要学的词是impair。 Impair是损害、损伤的意思。一项最新研究建议美国军方全面禁止吸烟。According to the study, tobacco use impairs military readiness in the short term, 研究显示,吸食烟草短期内有损
发表于:2019-02-03 / 阅读(79) / 评论(0)
英语每日一词
今天我们要学的词是impair。 Impair是损害、损伤的意思。一项最新研究建议美国军方全面禁止吸烟。According to the study, tobacco use impairs military readiness in the short term, 研究显示,吸食烟草短期内有损
发表于:2019-02-06 / 阅读(68) / 评论(0)
英语单词荟萃