Since 1908, chlorine has been added to drinking water.自1908年以来氯就被添加进饮用水当中。Chlorine is used to disinfect water.氯用来给水消毒。Chlorine is added to kill bacteria.加氯是为了杀死细菌。...
Others who were guilty were being allowed to get off scot-free.其他犯罪人员不予处罚。They got off scot-free because of lack of evidence.由于证据不足，他们得以逍遥法外。The 42-year-old Scot has guided the team to victory in three of their last five...
Objective : To investigate HIV infection status among heroin addicts in Liuzhou city.目的··: 了解我市吸毒人群HIV感染的情况.Withdrawal from heroin is actually like a severe attack of gastric flu.戒断海洛因的过程实际上就像患了一场严重的胃肠型流感。Heroin has been...