Wind is the horizontal movement of air. Wind speeds in hurricanes and typhoons exceed 120 km/h near the storm’s center and may approach 320 km/h. The highest wind speeds at the surface of the Earth — as high as 480 km/h — occur in tornadoes. Except for these storms, wind speed usually increases with height to the top of the troposphere.
- horizontal [ˌhɔriˈzɔntəl] adj.水平的
- hurricane [ˈhʌrikən] n.飓风
- typhoon [taiˈfu:n] n.台风
- exceed [ikˈsi:d] v. 超过(限度、范围)
- approach [əˈprəutʃ] v. 接近，逼近
- tornado [tɔ:ˈneidəu] n.龙卷风
- height [hait] n. 海拔
- troposphere [ˈtrɔpəusfiə] n.对流层
