1.
On an average a strong gale moves at the rate of 40 miles an hour, a storm at about 56 and hurricanes at 90.
平均来说，八级大风每小时风速达40英里，十一级风暴达56英里，而十二级飓风则达90英里。
2.
There 's storm coming.
十一级大风就要来了
3.
There 's a hurricane coming .
十二级大风就要来了。
4.
For a more relaxing speed, cruising or light-wind windsurfing takes place in winds of approximately 10 knots and under.
为了有一个更让人放松的速度，每小时十哩以内的风级中可以进行游弋或微风风帆冲浪。
5.
Article21 Public procurators are divided into twelve grades.
第二十一条检察官的级别分为十二级。
6.
The wind had piped up to a gale overnight.
一夜间风力增加到八级。
7.
He bounded up the wide steps with vigour.
他精神十足地跃上一级级宽阔的台阶。
8.
Medals will be awarded to contestants with the top three scores in each level.
比赛分四组:一到二年级，三到四年级，五到七年级，八到十一年级。
9.
American students generally attend school from the first through the twelfth grades.
一般来说，美国学生从一年级一直读到十二年级，
10.
I'm in Class 9, Grade 1, of the No. 15 Middle School.
我在十五中一年级九班学习。
11.
Article 21 Plans for cities shall be examined and approved at different levels.
第二十一条 城市规划实行分级审批。
12.
Elementary school-- for students from the first grade to the sixth grade (ages 6 to 12 years);
初级学校——供一年级至六年级的学生就读(年龄六到十二岁)；
13.
a belt of calms and light winds between the northern and southern trade winds of the Atlantic and Pacific.
在大西洋和太平洋上南北信风带之间的一级和二级风带。
14.
a gale-force westerly
蒲福风级达8级的西风.
15.
11 Major Fan of Mine and Optimization of Ventilation Systems
十一矿主要通风机改造及通风系统优化研究
16.
Winding And Following Wind Is The Painful Historical Lessons For The Twenty Years Before The third Meeting Of Eleventh Of The Party;
刮风、跟风:十一届三中全会前二十年的沉痛历史教训
17.
The wind had piped up to half a gale overnight.
一夜之间风力已增强到八级。
18.
Cause Analysis of Two-grades Axial-flow Primary Fan Blades Drifting
双级轴流一次风机叶片漂移原因分析