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。
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