air 测验EN[ɛə] [ɛː] [ɛəɹ] [ɛɹ] [-ɛə(ɹ)]
- 问题 1 :
Of all the transitions brought about on the Earth’s surface by temperature change, the melting of ice into water is the starkest. It is binary. And for the land beneath, the ___ above and the life around, it changes everything.
Traveling by ___ gives security officials implied consent to search your bags.