There was an attempt to exterminate ethnic groups in the north of the country.有人企图要将该国北方的族群斩尽杀绝。A huge effort was made to exterminate the rats.人们下了很大的力气要消灭老鼠。Staff use the poison to exterminate moles and rabbits.员工用毒药来消灭鼹鼠和野兔。Once cockroaches get into a building, it's very difficult to exterminate them.一旦楼里有了蟑螂，就很难将其彻底消灭。