明矾可以澄清浊水.Alum will settle turbid water.给这杯热水添加缓慢的明矾.Add the alum slowly to the cup of hot water.但是化学腐蚀剂例如明矾现在很流行.But chemical mordents mordants such as allon alum are popular today....
可能几乎令人难以相信的是,并不是所有的恐龙都是食肉类的, 或吃肉的.It may seem unbelievable that not all dinosaurs were carnivorous, or meat eating.原因不明的消瘦 、 无力, 上腹无规则的疼痛, 食欲下降, 特别厌食肉类食品.Unexplained weight loss, weakness, abdominal pain without rules, l...