https://online2.tingclass.net/lesson/shi0529/0008/8124/790_791_danci.mp3
https://image.tingclass.net/statics/js/2012
[ti:]
[ar:]
[al:]
[by:聽力課堂~vqdolsx.cn]
[00:01]profit 利潤,收益
[00:12]benefit 益處,好處
[00:24]convert 變換,轉(zhuǎn)化
[00:35]fluctuate 波動(dòng),起伏
[00:48]modify 更改,修改
[01:01]appropriate 適當(dāng)?shù)模∪缙浞值?/p>
[01:16]apt 恰當(dāng)?shù)?,適宜的
[01:24]