Unit 4 wildlife protection
Vocabulary
die out :灭亡，逐步消失，不复存在Many species of animals are in danger of dying out .die away：   1.减弱，逐步消失；风，声音渐弱，渐息，   2.（树木等）渐渐凋零，枯萎（根未死）；假死。His anger died away.
die down：1.（植物）枯萎，凋谢，（过冬时）假死2：逐步平息，渐渐停顿，逐步消失，变弱The wind has died down quite a lot .die of ：死于，因…而死They died of starvation.