Ech
abbr. echelon 梯形，梯次编队
🗣️ 情景例句
When are you going camping again?
你什么时候再去露营？
I'm glad you came.
我很高兴你能来。
This is what happened to the famous Beresovka mammoth which was found preserved and in good condition.
著名的那林索夫卡长毛象就是这样被保存下来的，而且保存得很好。