Water shortages could affect nearly two billion people... 截止至2025年 水荒问题
They produce enough grain to feed two billion people. 他们生产的粮食可以养活20亿人
And over two billion people have moved to the cities. 超过20亿人口涌入城市
They reveal nearly two billion years of the earth's history. 它们揭示了近二十亿年的地球历史
in three... two... Give 'em a welcome home, Rico! 三 二 一 来点欢迎仪式 瑞哥
-four, three, two... -Stay strong soldier! -四 三 而 -挺住啊 士兵
Penguin feeding time will begin in two minutes. 企鹅喂食时间两分钟后开始
First word. Two syllables. Sounds like... 第一个词 两个音节 听起来是
label these things. -In three, two, one... 贴上标签的 -倒计时三 二 一