contractus[法] 契约contractn.合同；婚约；合约；契约v.缩小；订合同；缩短；感染（疾病）；招致contracting party立约者contract ideology合同意识contract novation合同更新contracted design简约性设计contractile wings(昆虫等)可收折于背上的翅翼contract division合同分解contract benefits合同利益contractile force收缩力contract function对比函数contracted bladder挛缩性膀胱