https://online2.tingclass.net/lesson/shi0529/0008/8124/848_849_danci.mp3
https://image.tingclass.net/statics/js/2012
[ti:]
[ar:]
[al:]
[by:听力课堂~www.tingclass.net]
[00:02]environment 环境,周围状况
[00:18]surroundings 周围的事物,环境
[00:35]estimate 估计,估量
[00:48]evaluate 评估,评价
[01:00]compute 计算,估算
[01:12]