He knew that Karl could be an implacable foe.

他明白卡尔可能会成为他的死敌。

Karl gave a vulpine smile.

卡尔露出狡黠的微笑。

A new method for determination of water content in ammonium-uranyl tricarbonate by Karl -Fisher reagent titration is described in this paper.

本文叙述卡尔·费休尔试剂滴定法测定三碳酸铀酰铵中水分的方法,详细研究测定水分的各种条件,特别是铀、铵和碳酸根的干扰情况。

Chapter One reviews in a diachronical manner the development of the class theories, with an emphasis on the class theories of Karl Marx and Friedrich Engels.

第一章回顾阶级理论的历史发展，重点分析思和恩格斯的阶级理论。