1550s, from Late Latin contrapositionem (nominative contrapositio), noun of action from past participle stem of contraponere, from contra "against" (see contra) + ponere "to put, place" (past participle positus; see position (n.)).
实用例句
1. All fractures showed good contraposition no X - ray.
线片显示骨折处对位良好.
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2. This will greatly improve the contraposition of water diversity optimization and the utility the model.
