如果愿意的话,我们也可用幂级数法解题.We can solve it with the power - series method if we want.无穷级数的收敛性与发散性与此概念有关.Convergence and divergence of infinite series depend upon this concept.我们可删去两项或三项之后的级数.We may cut off the series after two o...
A thin twist of smoke curled from the cottage's single chimney.一缕盘旋的轻烟从农舍唯一的烟囱里缭绕升起。Bookbinding is largely a cottage industry.装订业主要是一种家庭手工业。Weaving and knitting are traditional cottage industries.编织和针织是传统的家庭手工业。...
附记, 这个网志的所有旧文章将在七月(转移满半年)全部删除.BTW , all entries on this blog will be deleted on this Jul.再附记:我离开纽约的时候一定是昏了头.PPS I must have been in a daze when I left New York....