隔离法生产的动物族群

barrier, ['briə] n (用来禁止通行的各种)障碍物(如:栅栏和关卡)=obstacle 【例】The police put a barrier 警察设了路障。barrier of speech 语言的隔阂

发表于:2018-12-30 / 阅读(41) / 评论(0) 分类 不择手段背单词

THIS IS AMERICA -March 4, 2002: The Lost Colony By Jill Moss . . . . . . . Broadcast: March 4, 2002 VOICE ONE: In Fifteen-Eighty -Seven, more than one-hundred men, women and children sailed from Brita

发表于:2019-01-02 / 阅读(110) / 评论(0) 分类 This is America

Welcome to THIS IS AMERICA in VOA Special English. I'm Steve Ember. VOICE TWO: And I'm Faith Lapidus. Roanoke Island is off the mid-Atlantic coast of the United States, in North Carolina. In fifteen eighty-seven, more than one hundred people arrived

发表于:2019-01-11 / 阅读(76) / 评论(0) 分类 VOA慢速英语2008年(八)月

Topics: Movies Pulp Fiction; the Outer Banks; lot versus batch; business ethics; to eat humble pie Words: dark comedy to credit (someone) with (something) to follow hitman disturbing formula barrier islands to stretch colony shipwreck to sink adventu

发表于:2019-01-22 / 阅读(35) / 评论(0) 分类 美语听力 English Cafe

今天我们要学的词是barrier。 Barrier是障碍的意思。Language barrier, 是语言障碍。Trade barrier, 是贸易壁垒。The lack of funding was the biggest barrier to the road improvement, 意思是道路改善的最大障碍是缺少资

发表于:2019-01-25 / 阅读(85) / 评论(0) 分类 英语每日一词

The barrier separating Israel from West Bank Palestinian territories is the theme of a Washington exhibit by a dozen U.S. and Canadian-based artists. Each gives a different representation of what the artist views as an obstacle to peace. The curator

发表于:2019-02-18 / 阅读(49) / 评论(0) 分类 英语新闻
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acupressurist
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anticondensation heater
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