1.vulnerable 脆弱的
Old people are particularly vulnerable members of our society.
老年人是社会中尤为明显的弱势群体 。
2.investigate 调查
The FBI has been called in to investigate.
联邦调查局奉命进行调查 。
3.appoint任命
She has recently been appointed to the committee.
她最近获委为委员会成员 。
4.surge 急剧上升
Share prices surged.
股价猛涨 。