有两种不同的表示方法：
1、A is 50% of B。
A占B的比例是50%
2、The ratio of A to B is XX。
A占B的比例是XX。
3、重点词汇：ratio
读音：英 [ˈreɪʃiəʊ] 美 ['reʃɪo]
释义：比率、比例、配比
4、短语：
（1）Aspect ratio [科技] 长宽比 ; 纵横比 ; 展弦比 ; 屏幕比例
（2）golden ratio 黄金分割率 ; 黄金比例 ; 黄金分割 ; 黄金比率
（3）plot ratio 容积率 ; 建造比率 ; 用地容积率
扩展资料：
表示“程度范围”的英语词汇还有：
1、proportion：一般认为proportion是比重、部分，可以把它当做是饼状图，在一定程度上类似于ratio。同时，proportions表示面积、体积、规模程度。
the proportion of ...的比例
keep sth. in proportion 恰当处事、恰如其分
act of (all) proportion (to sth) 不协调 不相称
in/out of proportion 均衡/不均衡
2、quota：一般理解为定额、限额、配额，定量指标之类。
比如说，谷物的进口量：import quota on grain
3、rate:
只需要看做是“...率”，比如常常讨论的失业率，脉搏的速率，都是可以用rate来表示的，就可以视为 “X％”。
同时，rate做动词还可以表示“评价；视为”的意思，比如说：
The company rated him highly.
公司对他的评价很好。
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第1个回答 推荐于2017-11-26
译:
A accounts for 12.7 percent of B. 或
The proportion of A is 12.7% in B.
还有其它表达.如下
参与资料:
girl students accounted for 47.3 percent of total primary school enrollment.
女在校生比例占47.3％。
The proportion of working women now stands at forty percent.
现在劳动妇女的比例占40％。
The natural reserves should cover around 10% of the territory of the city.
自然保护区总面积占全市国土面积比例达到10%。
All these proportions surpass 8 percent which is the proportion covered by the population of the minority nationalities in the total population of the country.
这些比例全都高于少数民族总人口占全国总人口8%的比例。
Fairly great changes have also taken place in the rural residents' food structure. Of their staple food, the proportion of refined and coarse food grains made up 50 percent each in 1978. In 1997, however, the proportion of the former reached 81.2 percent.
农村居民的食品结构也发生了较大变化，在其主食结构中，1978年粗、细粮消费比例各为50％，到1997年，细粮消费所占比重已高达81.2％；
In the NPC and the CPPCC National Committee of successive terms, the percentage of ethnic minority representatives has far exceeded the proportion of the ethnic minority population in the national population, and each of the 55 ethnic minorities, no matter what their populations, has its own representatives.
在历届全国人大、政协中，少数民族代表和委员所占的百分比，都大大超过少数民族在全国人口中所占的比例；55个少数民族不论人口多少都有自己的代表和委员。
It wasn't an overwhelming percentage,but close to 65％.
女性比例虽没有占压倒优势，但接近65％。本回答被提问者采纳
A accounts for 12.7 percent of B. 或
The proportion of A is 12.7% in B.
还有其它表达.如下
参与资料:
girl students accounted for 47.3 percent of total primary school enrollment.
女在校生比例占47.3％。
The proportion of working women now stands at forty percent.
现在劳动妇女的比例占40％。
The natural reserves should cover around 10% of the territory of the city.
自然保护区总面积占全市国土面积比例达到10%。
All these proportions surpass 8 percent which is the proportion covered by the population of the minority nationalities in the total population of the country.
这些比例全都高于少数民族总人口占全国总人口8%的比例。
Fairly great changes have also taken place in the rural residents' food structure. Of their staple food, the proportion of refined and coarse food grains made up 50 percent each in 1978. In 1997, however, the proportion of the former reached 81.2 percent.
农村居民的食品结构也发生了较大变化，在其主食结构中，1978年粗、细粮消费比例各为50％，到1997年，细粮消费所占比重已高达81.2％；
In the NPC and the CPPCC National Committee of successive terms, the percentage of ethnic minority representatives has far exceeded the proportion of the ethnic minority population in the national population, and each of the 55 ethnic minorities, no matter what their populations, has its own representatives.
在历届全国人大、政协中，少数民族代表和委员所占的百分比，都大大超过少数民族在全国人口中所占的比例；55个少数民族不论人口多少都有自己的代表和委员。
It wasn't an overwhelming percentage,but close to 65％.
女性比例虽没有占压倒优势，但接近65％。本回答被提问者采纳
第2个回答 2008-09-22
the percentage of A in B is ...
第3个回答 2008-09-22
the proportion of A to B
第4个回答 2008-09-22
A account for x% of B
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