1、purge

清除，清洗，肃清（组织中的异己分子）

The leadership voted to purge the party of 'hostile and anti-party elements'.

领导层投票决定清除党内的“敌对和反党分子”。

He recently purged the armed forces, sending hundreds of officers into retirement.

他最近肃清了军队中的异己分子，让数百名军官退休。

清除；消除

He closed his eyes and lay still, trying to purge his mind of anxiety.

他闭上眼睛躺着不动，试图消除内心的焦虑。

The only way to purge the economy of this new burst of inflation is a short, sharp recession.

要消除新爆发的这次通货膨胀，唯一的方法是让经济短期内急剧衰退。

2、concern

忧虑;担心

The group has expressed concern about reports of political violence in Africa.

该团体对有关非洲政治暴力的报道表示关切。

The move follows growing public concern over the spread of the disease.

针对公众对该疾病的不断蔓延日益担忧，从而出台了这一举措。

使担忧;使心烦

The growing number of people seeking refuge in Thailand is beginning to concern Western aid agencies.

到泰国寻求庇护的人日益增多，这开始引起了西方援助机构的不安。

It concerned her that Bess was developing a crush on Max.

贝丝迷上了马克斯，这让她很担心。