Lack of concentration on education, distractions, health problems to the first child are the possible adversities.
对教育的缺乏关注 、 分心 、 头胎儿的健康问题都是可能的逆境.
Prather says we should now be following nitrogen trifluoride concentrations in the atmosphere closely.
普莱瑟说我们现在应当密切关注大气中的三氟化氮含量.
Concentration of the mental powers upon an object; a close or careful observing or listening.
注意,专心,留心:将精力集中于某一物体; 关注专心的观察或倾听.
Growing numbers of Americans were alarmed by increased concentration and called for action.
这种日盛一日的合并之风引起了越来越多的美国人的关注,他们要求采取措施.