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...
I grew up around people who had wonderful, mellifluous voices.从小到大，生活在我周围的人都有着悦耳动听的嗓音。Soon the room is filled with Bates' mellifluous tones.很快，房间里便充满了贝茨动听的声音。The sweet witty soul of Ovid lives in mellifluous and hon...
His voice was angry and he spaced the words for emphasis.他的声音里透着愤怒，为了强调，他一字一顿。Its houses are large, well-spaced and surrounded by gardens.其房子很大、间距适当，周围全是花园。He's got this spaced-out look.他一副吸毒之后的迷幻模样。...