n.衰减（耗）；死尽；绝种

The antibiotic treatment caused a massive die-off of harmful bacteria in his gut.
抗生素治疗导致他肠道内有害细菌大量死亡。
A fish kill, or die-off, occurs when there isn't enough dissolved oxygen in the water for the fish to survive.
当水中的溶解氧不足以维持鱼类生存时，就会发生鱼类大量死亡的情况，称为"鱼杀"或"鱼类死亡"。
The sudden die-off of bees is a major concern for farmers and agriculture worldwide.
蜜蜂的突然大量死亡是全球农民和农业的一大忧虑。
The drought led to a severe plant die-off, causing widespread famine in the region.
干旱导致植物大面积死亡，使得该地区发生了广泛的饥荒。
After the forest fire, there was a significant die-off of small mammals due to loss of habitat.
森林火灾后，由于栖息地丧失，小型哺乳动物的数量大幅减少。
Overfishing has resulted in a dramatic die-off of certain fish species in the ocean.
过度捕捞导致海洋中某些鱼类种群数量急剧下降。
The die-off of coral reefs around the world is largely attributed to climate change.
世界各地珊瑚礁的大规模死亡主要归因于气候变化。
The toxic algae bloom caused a massive die-off of sea birds along the coastline.
有毒赤潮导致沿海地区的海鸟大量死亡。
The die-off of honeybees could have devastating consequences on global food production.
蜜蜂数量的减少可能会对全球粮食生产造成灾难性影响。
The introduction of invasive species can lead to native species die-offs as they struggle to compete.
入侵物种的引入可能导致本地物种大量死亡，因为它们在竞争中难以生存。