kill off

动词 kill off:

1. kill en masse; kill on a large scale; kill many
   同义词：exterminate

1. The author kills off her hero in Chapter7.
   作者把她的主人翁安排在第七章中死去。
2. A case could be made out that it's more human to kill off these wild kangaroos.
   人们可以提出理由，即杀光这些野袋鼠更为人道。