The half - life of francium is 22 minutes.钫的半衰期是22分钟.Francium is the densest of the Alkali Metals and also radioactive.钫是碱金属中密度最大的,具有放射性.Even Francium's most stable isotope, Francium - 223 only has a half - life of ...
Go north on I-15 to the exit just past Barstow.沿着15号州际公路一直向北，一过巴斯托就从出口驶出。They escaped through an emergency exit and called the police.他们从紧急出口逃脱，并报了警。Go straight through that door under the EXIT sign.从“安全出口”标志下的那道门直穿过去。...
Quarrels and feuds between tribes became incessant.部落间的争吵、反目成仇的事件接连不断.There were feuds in the palace, no one can deny.宫里也有斗争, 这是无可否认的.He had aroused three irreconeilable feuds in Capri.他在卡普里岛引起了三场不可和解的冕仇....
Beer and Qingdao, having the lot that indissoluble It'seems that.啤酒与青岛, 似乎有着不解的缘分.The practice of Intel is fresh and let us indissoluble.英特尔的做法是新鲜而又让我们不解的.Very indissoluble, ask why he is willing so project oneself....
He admitted a lack of motivation and a feeling of sloth.他承认自己缺乏动力，总想犯懒。Sloth turns the edge of wit.懒散能磨去才智的锋芒.Absence of competition makes for sloth.没有竞争会导致懒惰。Sloth is the mother of poverty.懒惰是贫穷的原因.Now the American and ...