プログレッシブ和英中辞典(第4版)の解説
とうきゅう【等級】
a class; a grade; a rank
酒の等級はどうやってつけるのですか
How do you grade [rank] sake?
児童は水泳の技量により等級が１から５までつく
These children are ranked from 1 to 5 according to their swimming skills.
その劇場の座席にはいくつかの等級があった
There were several classes of seats in that theater.
給与の等級が一つ上がった
I had my salary raised one notch.
ユースホステルには等級の別はない
There are no distinctions among youth hostels based on rankings.