His boots and purple beret identify him as commanding the Scottish Paratroops.他的长靴和紫色贝雷帽表明他统领着苏格兰伞兵部队。He is an eccentric character who likes wearing a beret and dark glasses.他人很怪，喜欢戴贝雷帽和墨镜。...
Logarithms were invented to shorten the work of extended numerical computation.人们发明对数来缩短运算冗长的数值计算工作.Yes, logarithms — that horror of high school algebra — were actually created to make our lives easier.没错, 对数虽然是高中代数的梦魇,它...