Group (2) - Spelling Practices

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(1) v. (欠陥) abandon or turn against; cease or change one's loyalty 
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(2) a. Syn. barren; empty(欠い) completely lacking; barren or empty
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(3) n. Syn. conversation(対話) conversation
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(4) n. (生態) biologist who studies relation between organisms and their environment
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(5) a. Syn. vacant(空) containing nothing; not holding or having anything within; void of contents or appropriate contents
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(6) n. (発掘) act of digging
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(7) v. (免除) be free from; free from an obligation, a duty, or a liability to which others are subject
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(8) a. Syn. depleted; tired(排気) depleted; tired
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(9) v. Syn. dilate; extend(展開) become larger in size or volume; grow stronger; add details
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(10) v. Syn. attach; affix(固定) attach; affix