When foods from different plant sources are eaten together, deficiency in one is compensated for by sufficiency in another.多种蔬果类食物一起吃的话，一种食物所缺乏的营养会由另一种富含该营养的食物予以补足。Our country has sufficiency of natural resources.我国有足够的自...
他以前从未教过课，甚至不确定自己该不该教课。He'd never been in a class before and he was not even sure that he should have been teaching.这次教课选择题还是填充题?Was the test multiple choice or fill in the blank?明天外教课去广州越秀公园边走边介绍啊!Teacher lesson tom...
Complete secrecy surrounded the meeting.会议在绝对机密的环境中进行。Such secrecy breeds and encourages fear and suspicion...如此保密的做法滋生并加剧了人们的恐惧和疑虑。The secrecy about the President's condition had ceased to matter...总统的健康状况已经没有保密的必要...