Subalgebra
[计] 子代数
🗣️ 情景例句
Good. Can we sign them right away?
好的。我们现在可以签合同了吗？
Old vessels must leak.
旧船必漏。
The more expensive kind of antique shop where rare objects are beautifully displayed in glass cases to keep them free from dust is usually a forbidding place.
高档一点的古玩店为了防尘，把文物漂亮地陈列在玻璃柜子里，那里往往令人望而却步。