https://online2.tingclass.net/lesson/shi0529/0008/8124/848_849_danci.mp3
https://image.tingclass.net/statics/js/2012
[ti:]
[ar:]
[al:]
[by:聽力課堂～m.360newlife.cn]
[00:02]environment 環(huán)境，周圍狀況
[00:18]surroundings 周圍的事物，環(huán)境
[00:35]estimate 估計，估量
[00:48]evaluate 評估，評價
[01:00]compute 計算，估算
[01:12]
