Group (H I) - Spelling Practices

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(1) n. (手册,指南) concise reference book providing specific information
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(2) n. Syn. disadvantage(生理上或智力上的缺陷,残疾,智力低下) disadvantage; physical disability; cripple; hinder; impede
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(3) n. ((门等)铰链,枢纽) a joint that holds two parts together so that one can swing relative to the other
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(4) n. (历史学家) one who is an authority on history
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(5) n. (园艺) cultivation of plants 
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(6) a. Syn. dull; monotonous(单调的) lacking variety or excitement; monotonous
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(7) n. (无知,不了解) lack of knowledge or education
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(8) v. Syn. represent; demonstrate; depict((用图或例子)说明,阐明) represent; demonstrate; depict; clarify, as by use of examples or comparisons
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(9) a. (不适宜的,不合适的) unapt; not apt; unsuitable; inept.
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(10) v. Syn. combine; unite(合并,联合) combine something into a larger whole; unite