Ecologists argue that the benefits of treating sewage with disinfectants are doubtful.生态学家认为用消毒剂处理污水是否有益值得怀疑。The ecologists say that is a very productive kind of waterfront.生态学家们认为那儿是一块非常丰饶的滨水区.In the opinion polls the e...
大自然是自生的.The nature is autogenetic.这些制约因素之一是在模数转换器内自生的噪声.One of these constraining factors is self generated noise within the analog to digital converter....