F2F Class Notes (Mike)

Vocabulary

dusty (adj.) 灰尘很多的
My room has never been dusty.

oxygen (n) 氧气

nitrogen (n) 氮气

volcano (n) 火山
The volcano erupted last month.

erupt (v) 爆发，喷发 – eruption (n) 爆发，喷发

explode (v) 爆炸 – explosion (n) 爆炸
I saw an explosion yesterday.

mammal (n) 哺乳动物
Whales are the largest mammal on earth.

on the verge of 在…的边缘

extinction (n) 灭绝

extinct (v) 灭绝
Dinosaurs went extinct 65 million years ago.