Coalgebra
上代数
🗣️ 情景例句
This dog is well trained.
这只狗受过很好的训练。
Children learn to creep ere they can go.
孩子要走路，先得学爬行。
For him, caves have the same peculiar fascination which high mountains have for the climber.
对洞穴探险者来说，洞穴有一种特殊的魅力，就像高山对登山者有特殊魅力一样。