Group (H I) - Spelling Practices

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(1) n. Syn. danger; risk(危险,危害物) danger; risk
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(2) n. (历史学家) one who is an authority on history
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(3) n. (园艺) cultivation of plants 
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(4) n. Syn. dampness; moisture(湿气,湿度) dampness; moisture
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(5) n. Syn. lingo(习语,成语) expression whose meaning differs from meanings of its individual words; distinctive style
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(6) v. Syn. incriminate(牵连,牵扯(犯罪),暗示) incriminate; involve or imply as necessary accompaniment or result
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(7) a. Syn. impressive; grand(使人难忘的,壮丽的) adapted to impress forcibly; impressive; impressive in appearance
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(8) n. Syn. slope; slant(倾斜,斜面) cause to lean, slant, or slope; deviate from the horizontal or vertical
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(9) a. Syn. essential; requisite(不可缺少的,必需的) essential; requisite; impossible to be omitted or remitted
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(10) a. Syn. inappropriate; incompetent(不相称的,不合适的,不称职的) lacking of judgment, sense, or reason; unsuited; inappropriate; foolish