Level 1 - 1 - Spelling Practices

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(1) n. [针刺,针灸] treatment of pain or disease by inserting the tips of needles at specific points on the skin

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(2) n. [机敏的] the warning serves; alarm; condition of heightened watchfulness or preparation for action

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(3) n. [军火库] storage place for military equipment; a stock of weapons

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(4) n. [极光] a natural appearance of coloured light in the sky, that is usually seen nearest the Arctic or Antarctic

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(5) n. [十亿(的)] the number that is represented as a one followed by 9 zeros

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(6) n. [生物学家] a scientist who studies living organisms

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(7) n. [范围,限制] tied; held; committed; limit; constraint; leap; jump

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(8) n. [小夹子,回形针,弹夹,选录,摘录] a small section of filmed or filed material

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(9) a. [相似的] similar or equivalent; being of equal regard; worthy of being ranked with

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(10) a. [费解的,棘手的,结构复杂的] difficult to analyze or understand