我知道你研究黑猩猩至今已有30年了。I know that you'vebeen studying chimpanzees for thirty years now.至今尚不清楚他究竟是饮弹自杀还是被谋杀。To this day, it's unclear whether he shot himself or was murdered.从3月至今，他已经卖出130万股了。Since March, he has unl...
Without doubt chloroform is one of the most important compounds containing a carbon - halogen bond.毫无疑问,氯仿是含碳?卤键的最重要的化合物之一.The formation of polyhalides depends on the combination of a central halide ion with a halogen.多卤...