James Gregory gave in in his " Geometriae Pars Universalis " a method of rectifying curves.JamesGregory在他的《几何的通用部分 》 中给出了计算曲线长度的方法.The dangerous type chronic otitis media occurs with pars flaccida and marginal perforatio...
冬天又来了, 把寒风 、 严霜 、 驯顺的知更雀和闪烁的星光,也都带来了.Winter again came round, with its winds, frosts, tame robins, and sparkling star light.老虎驯顺的在笼子里睡觉呢,一点都不吓人.The tiger doesn't look frightening at all when it is sleeping tamely in...