Hierarchical
等级───Grade;等级───Grade
I was a naval officer, lieutenant junior grade.───我是一名海军中尉军官。
She had a strong desire to be a dancer but failed to make the grade.───她非常渴望成为舞蹈演员，但却因为达不到标准而未能圆梦。
I am one grade below him.───我比他低一年级.
He ranks among the best pupils of his grade.───他是他们年级最好的学生之一.
She drove up a steep grade and then began the long descent into the desert.───她驾车开上一个陡坡，然后沿着长长的下坡路驶入沙漠。
The parents want their child to skip to the second grade.───这家父母希望他们孩子能跳级到二年级.
Simply sand them down with a fine grade of sandpaper.───只要用细砂纸把它们打磨一下即可。
We grade the students according to their reading ability.───我们根据阅读能力将学生划分等级.
Billy is in the ninth grade.
Children will learn to multiply in the second grade.
High grade petrol is expensive.
I was just in grade school at the time, but I remember it perfectly.
This grade of wool can be sold at a fairly low price.