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extraterrestrial的复数形式为：extraterrestrials...
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extraterrestrial的音标：extraterrestrial的英式发音音标为：[ˌekstrətə'restriəl]extraterrestrial的美式发音音标为：[ˌɛkstrətə'rɛstriəl]...
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NASA has started a 10-year search for extraterrestrial intelligence.美国航空航天局已经启动了一个为期10年的寻找外星人的项目。One theory about the existence of extraterrestrial life rests on the presence of carbon compounds in meteorites.地球外存在生命的理论是...
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One theory about the existence of extraterrestrial life rests on the presence of carbon compounds in meteorites.地球外存在生命的理论是基于陨星上存在碳化合物质这一事实的.Methane may have extraterrestrial significance.甲烷具有星际意义.In going through the ea...