the density of a gas一种气体的密度Mercury has a much greater density than water.水银的密度比水大得多.Astronomers know that Pluto and Triton have nearly the same size, mass, and density.天文学家知道冥王星与海卫一拥有几乎相同的体积、质量与密度。...
We watched the cow suckling her calves.我们看了奶牛如何给小牛喂奶。Chymosin used traditionally in cheese making is an aspartic protease extracted form abomasum of suckling calves.传统干酪加工中使用的凝乳酶是从犊牛皱胃中提取出的一种天冬氨酸蛋白酶.The calves were reall...
Near the end of Devonian times, thirty percent of all animal life vanished.在泥盆纪末期，30％的动物物种都灭绝了。The contact relationship between Silurian and Devonian is parallel unconformity.泥盆系与志留系之间为平行不整合接触.Blooming of Bacteria and Al...
Data and constraints can easily be changed to test theories.信息库中的数据和限制条件可以轻易地改变以检验假设.Are there any moral constraints on politics in Machiavelli's view?在马基维里的观点中是否存在着对政治的道德限制?He is wanting in moral constraints.他缺少道德约...