You have done a brave act and you will hear about it.你干了一件勇敢的事,你将会受到奖赏的.You always hear about planes being delayed because of technical faults.你总能听到由于技术事故而使飞机迟期起飞的事.What you hear about may be false; what you see is true....
We are here to protect and assist the weak and infirm.我们来这里保护、帮助年迈体弱者。The public is urgently requested to assist police in tracing this man.紧急要求公众帮助警方追踪此人。The Authority will provide a welfare worker to assist you.当局会派一名义...
Flavin: Any of a class of organic compounds, pale yellow biological pigments that fluoresce green.黄素: 一组浅黄 、 绿萤光生物色素,在植物和动物组织中分布很广,含量少.The cheaper FNDs fluoresce roughly as well as those produced with an electron beam.此种...