the use of poisonous gas to remove harmful insects, bacteria, disease, etc. from somewhere or something

Two hospital wards have had to be closed for fumigation. 医院的两个病区不得不关闭来做熏蒸消毒。

They have begun testing a fumigation technique that they hope will be effective in decontaminating the building. 他们开始试验一种新的熏蒸消毒法，希望能有效地对整座房子进行消毒。