The indefinite integral is an antiderivative.不定积分是反导数.The graph of the antiderivative of the function is called the integral curve of.函数的原函数的图形称为的积分曲线....
班克是一名38岁的单身汉，在费城长大。Bank is a 38-year-old singleton who grew up in Philadelphia.一份由联邦储备银行的费城分部汇编的报告说经济不景气。A report compiled by the Fed's Philadelphia branch described the economy as weak.只有在费城那次我们曾试着做那样的事。The only ti...
In analyzing the diaries, they found troubling age - related trends in sleep behavior.分析这些日志后, 研究人员发现睡眠行为中存在的年龄相关的问题.A spokesman insisted the two events were 'in no way related'...一位发言人坚称这两起事件“绝无关联”。A drug-rela...