2011看雅思文章，背雅思词汇(3)

2011看雅思文章，背雅思词汇(3) #

[ZK1]delta ['deltE] n. #

1.the fourth letter of the Greek alphabet(Δ,δ)希腊字母表的第四个字母。

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2.triangular area of alluvial land at a river’s mouth, enclosed or crossed by branches of the rivers.(河口的)三角洲 #

the Nile Delta 尼罗河三角洲

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[ZK2]wear sth. down: (causing sth to) become gradually smaller, thinner, etc.使某物逐渐变小，变细，变薄等。 #

[ZK3]outline: #

1.lines showing the shape or outer edge of sth.轮廓，外形 #

She could see only the outlines of the trees in the dim light. 朦胧中，她只看到树木的轮廓。

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2.statement of the main facts or points要点，大纲，摘要 #

an outline of an essay/ a lecture

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[ZK4]dramatic:

1.of drama.戏剧的

a dramatic society 戏剧协会

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2. exciting or impressive 戏剧性的，激动人心的，给人深刻印象的

dramatic changes, development, news 激动人心的变化，发展，新闻 #

[ZK5]fluctuate #

[;flVktSu'eiSn] n.变化，波动

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wide fluctuations of temperature. 温度的巨大变化

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[ZK6]hectare['hekteE] #

measure of area in the metric system, equal to 100 ares or 10000 square metres. 公顷