1.
The page size, 4 by6 inches, of a book composed of printer's sheets folded into18 leaves or36 pages.
十八开本纸张尺寸，4英寸乘6接?寸，可印制装订成18张或36页的书
2.
Eighty! Eighty! Eighty yuan!
八十！八十！八十元！
3.
your letter of the 28th instant
您本月二十八日的来函
4.
eight, nine, ten! Eight, nine, ten!
八，九，十！八，九，十！
5.
In the mid-1980s, breakdancing became popular.
二十世纪八十年代，街舞开始流行，
6.
Pupation takes place abou the middle part of April.
四月中旬开始化蛹,蛹期十八至二十天。
7.
As a result of this textual criticism,the exact starting time should be June,24th year in the Wanli era,and the ending time be July,48th year in the same era.
经本文考证 ,开始的具体时间应为万历二十四年六月 ,罢除时间则是万历四十八年七月
8.
What time does your class begin? It begins at eight-ten.
你的课几点开始？八点十分开始。
9.
Huang Kan s Ancient Phonology: 19 Consonants and 28 Rhymes in the Ancient Times;
黄侃的古音学:古本声十九纽和古本韵二十八部
10.
Article 28 This Law shall go into effect on May 1, 1987.
第二十八条本法自一九八七年五月一日起施行。
11.
eighteen, nineteen, twenty.
十八，十九，二十。
12.
Article18 This Law shall come into force on the day of its promulgation.
第十八条本法自公布之日起施行。
13.
Article28 This Law shall come into effect as of the date of its promulgation.
第二十八条本法自公布之日起施行。
14.
(2) With paid-in capital of no less than RMB 8 billion;
（二） 实收资本不少于八十亿元人民币；
15.
These Provisions shall go into effect on September 10, 1989.
本规定自一九八九年九月十日起实施。
16.
In this state, you can't drive until you are 18 years old.
本州规定，年满十八岁方可领驾驶执照。
17.
This dictionary has 1856 pages.
这本词典共有一千八百五十六页。
18.
The novel is set in Paris in the 18th century.
那本小说以十八世纪的巴黎为背景。