I cannot give at second hand any impression of his vivacious delivery.他的叙述绘声绘色,他的原话经我一转述就要大为减色.The vivacious girl made a good cheer-leader.这个充满活力的女孩做了啦啦队队长。She's beautiful, vivacious, and charming.她漂亮活泼，魅力十足。Wild ri...
Theorem 1 and are equivalent infinitesimals if and only if.定理1与是等阶无穷小的充分必要条件为.They capture small - scale behavior, just like infinitesimals, but use the ordinary real number system.他们捕获的小规模的行为, 就像无穷小, 但使用普通的实数系统....
他的水彩设计使许多图书大为生色。His water-colour designs adorn a wide range of books.现在市场营销已无处不在，图书也不例外。Marketing is applied to everything these days, and books are no exception.我愿意根据每本图书各自的优点来作出评价。I am ready to judge any book on its me...