“必要的”的英语可以翻译为：essential，indispensable，necessary，needful ...

他说：“我从未故意将任何病人置于不必要的风险境地。”"I have never knowingly exposed any patient to needless risks," he said.为什么我们要为酒吧和宾馆不必要的暖气开支买单呢？Why do we pay to overheat pubs and hotels?找股票经纪人之前，先要做好必要的准备工作。Before you go near a stockbroker, d...