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covalent, covalent bond, covar, covariability, covariance, covariant, covariation, covary, cove, covelline,

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舡, 船, 船帮, 船边交货价, 船舶, 船舶安全证书, 船舶代理人, 船舶的, 船舶抵押契约, 船舶管理费,