Academic Words Level 4 - 1 - Spelling Practices

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(1) a. [原来的,土著的] being the first of its kind in a region; primitive; native

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(2) n. [到来,出现] coming or arrival, especially of something extremely important

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(3) v. [混合,减少纯度] combine; mix; make less pure; lessen or moderate

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(4) n. [屏障,障碍物] hastily put together defensive barrier; obstacle

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(5) v. [引用,掌握] quote; adduce as an instance

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(6) a. [必须做的,被强制的] mandatory; obligatory; required by rule

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(7) a. [全等的] possessing congruity; suitable; agreeing; corresponding

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(8) a. [尽责的,一丝不苟的] diligent; responsible; reliable

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(9) v. [约束,收缩] restrict; shrink; make smaller or narrower by binding or squeezing

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(10) a. [粗笨的,累赘] heavy; difficult to handle because of weight or bulk