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Scientifically known 3,4-methylenedioxy-N-methylamphetamine, MDMA is usually taken in pill form and supposed to be composed of the pure chemical.
科学上来说，摇头丸的组成是亚甲二氧甲基苯丙胺，通常和很纯的化学药品一起制成药丸。
《TOFEL（无字幕版）》《托福学习视频》
双语例句
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Consist of; be composed of
由..构成；包括
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Soon I heard him earnestly entreating me to be composed.
不久我就听他真诚地求我镇静下来。
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The highest class would be composed of the intellectual aristocracy.
最高阶层将由高智力的贵族政府组成.
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Be composed of All substances are composed of a great many particles called atoms.
一切物质都是由大量称作原子的粒子构成的。
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In the best of all possible worlds they need to be composed.
更理想的情况是他们能够被组合使用。
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The shop name shall be composed of more than two Chinese characters.
字号应当由两个以上的字组成.
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Vary in size, can be composed of a few millimeters to a few centimeters.
大小不等，可由数毫米至数厘米大。
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Appears to be composed of pure energy, channeled through unconnected parts.
似乎由纯粹能量组成, 经过不连接的零配件引导.
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The pyramid structure would be composed of 55 smaller pyramids stacked five high.
这个金字塔建筑物由五个高度等级的55个小金字塔组成。
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Life is like music. It must be composed by ear, feeling and instinct, not by rule.
人生如一首乐曲，要用乐感、感情和直觉去谱写，不能只按乐律行事。 䳀。