一、percent:[ pə'sent ]
a.百分之一,(与基数词连用)百分之...的
n.百分之...
同义词：percentage
例句:
1.I am a hundred percent in agreement with you.
我百分之百同意你的看法.
2.The covering of forestry in our town is 60 percent.
我们镇的森林覆盖率是百分之六十.
二、proportion:[ prə'pɔ:ʃən ]
n.比例,均衡,部份
同义词：dimension
例句:
1.This painting lacks proportion.
这幅画比例失调.
2.We are trying to reduce the problem to manageable proportions.
我们正努力把问题缩小到可以控制的范围内.