钫的半衰期是22分钟.The half - life of francium is 22 minutes.钫是碱金属中密度最大的,具有放射性.Francium is the densest of the Alkali Metals and also radioactive.ㄗ欧竦托庞闷兰洞 钫叩氖谐.What will happen when monetarypolicy is tighter , with interest r...
The race organizers are trying to attract sponsors.比赛的组织者在想方设法吸引赞助者。The danger of commercialism is that the churches end up dancing to the tune of their big business sponsors.商业主义的危险就是教会最终可能会被大赞助商牵着鼻子走。It is thanks to th...