Hierarchical
级别───level;级别───level
As the level of work increased from light to heavy, workers ate more.───随着工作强度的加大，工人们吃得更多了。
50 metres above sea level───海拔50米
He forced his voice to remain level.───他竭力使自己的语气保持平静。
The two ships draw level.───这两条船并排行驶.
First we have to lift the level of instruction.───首先我们得提高教学水平.
He waited until they were level with the door before he turned around sharply and punched Graham.───等两人都到了门边后，他才猛地转过身来朝格雷厄姆挥手就是一拳。
That there are problems with this kind of definition is hardly surprising, given its level of generality.───由于其笼统性，不难料想这种定义会存在问题。
Continued deposition of silt along the coast is crucial in counteracting the rise in sea level.───海岸边泥沙的不断沉积对于抑制海平面的上升起着至关重要的作用。
First we have to lift the level of instruction.
Pity is a level for quickening love.
The level of unemployment is rising.
When are you taking A level/your A levels?
Religion matters very much at a national level.