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1.a non-finite form of the verb; in English it is used adjectivally and to form compound tenses.
动词的非限定形式；在英语中它被用作形容词并且构成复合时态。收藏指正
2.used esp in formal written English as the object of aviorprepiin a non-defining clause
尤用於庄重的书面语中，作动词或介词的宾语以引导出非限定从句收藏指正
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