这些濒临灭绝的、性情温顺的大型动物属于高度群居的动物。These endangered gentle giants are highly social animals.雌兽与幼崽显然受益于群居.Females and cubs clearly derive some benefit from living in groups.这些动物非常喜欢群居.These animals are highly gregarious....
Isn't the nonradioactive form of thallium used for rat poison?.铊的非放射性形态不是用于制造老鼠药吗？Isn't the nonradioactive form of that used for rat poison?铊的非放射性形态不是用于制造老鼠药 吗 ?...