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abbr. 见下页（please turn over）；（美）专利和商
局（Patent and Trademark Office）；动力起飞（Power Take Off）
局（Patent and Trademark Office）；动力起飞（Power Take Off）
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in-grade, ingraft, ingrain, ingrained, Ingram, ingrate, ingratiate, ingratiating, ingratiation, ingratiatory,
相似单词
Ptinus, ptisan, PTK, PTL, PTM, PTO, ptochocracy, PTolemaic, Ptolemaic system, Ptolemaism,
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