killed off短语²⁵³⁹⁹ 基本例句 na.杀光 These eruptions have dramatically shaped life on Earth, pumping huge amounts of ash, dust and gas into the atmosphere that have killed off species and altered global climate. 这些火山的爆发引人注目地改变了地球上的生命，大量的火山灰、尘埃和气体注入大气，就会杀死很多物种和改变全球的气候。 yeeyan