spot (v) 看出,发现 oblige (v) 使...感到必须:obliged (adj)必须的, feel obliged to do sth. 感到不得不做某事 ==have to.eg:Experts felt obliged to investigate. somehow (adv) 不知怎么搞地,不知什么原因 in the possession of, 为...所有 On being observed, it immediately ran away. 前面划线部分是分词短语,这…