pest是什么意思？

White storks feed on locusts ( ' , 蝗虫) and other insects that can become pests if their numbers get out of hand.

While holding a burial ceremony for a pet mouse, they were killing pest mice.

At the same time, this sea-water also kills off the greedy giant apple snail, an introduced pest that feeds on young rice plants.

given the moth's ability also to attack crops like pepper and potatoes, Audu Ogbeh, Nigeria's minister of agriculture, has warned that the pest may "create serious problems for food security" in the country.