He praised the two recent Security Council resolutions tightening the screws on North Korea with additional economic sanctions.

他称赞了联合国安理会近期通过的两项决议，这些决议旨在通过额外的经济制裁进一步向朝鲜施压。

The government has started to tighten the screws on illegal share dealers.

【screw】政府开始打压不法券商。