由于火山喷发的威胁，当局下令进行居民疏散。

The authorities ordered the ___evacuation of residents due to the threat of a volcanic eruption.

消防员监督了建筑物内人员的疏散过程。

The firefighters supervised the ___evacuation of people from the building.

医生建议增加纤维摄入量以改善肠道排泄功能。

The doctor recommended increasing fiber intake to improve bowel ___evacuation.