1.
The Distinction Between the Third Rhyme and the Fourth Rhyme in Mediaeval Chinese from the Perspective of the Words of the Same Etymology in Chinese and the Language of Thailand;
从泰汉关系词看中古汉语三四等韵差异
2.
Multiply three By four gives twelve.
三乘以四等于十二。
3.
As two is to three, so four is to six.
四比六等于二比三。
4.
Two is to three as four is to six.
二比三等于四比六。
5.
the second, third, fourth, etc power of x x
的二次、 三次、 四次等幂
6.
12 divided by 4 equals 3.
十二除以四等于三。
7.
Are they called first-class car, secondclass car and so on?
外宾: 称作一、二、三、四等吗？
8.
a tetrahedron with four equilateral triangular faces.
有四个等边三角形面的四面体。
9.
the second,third,fourth,etc power of x(x2,x3,x4,etc)
x的二次、三次、四次等幂（x2,x3,x4等）
10.
cut apples into halves, thirds, quarters, etc
把苹果切成两半、 三瓣、 四瓣等
11.
Specifications for the third and fourth order leveling
GB12898-1991国家三、四等水准测量规范
12.
One metre is 3 1/4 feet.
一米等于三又四分之一英尺。
13.
It is also necessary to set up medium-sized plants with an annual capacity of 300,000 or 400,000 tons.
再有中等的，三、四十万吨的钢厂，也要开。
14.
First, second, third, fourth and so on. We call them ordinals.
第一，第二，第三，第四等等。我们称之为序数。
15.
Monsieur will have to wait three or four hours at the least at every relay.
先生在每个换马站都至少得等上三四个钟头。
16.
Couldn't they even wait the three or four days from Hong Kong to Shanghai?"
从香港到上海这三四天的工夫都等不及了么？”
17.
I got a third-class prize for my scientific research from Sichuan Provincial Government.
我获得了四川省政府颁发的科研三等奖。
18.
Research on Present Situation of Nurse-Patient Relationship of Four Grade III-A Hospitals in Changchun
长春市四所三级甲等医院护患关系现状研究