Pyrazolidyl
吡唑烷基
🗣️ 情景例句
My wristband.
我的腕带。
When poverty comes in at the door, love flies out at the window.
贫穷进门来，爱情飞窗外。
For one thing they keep the water clean.
一来，水下植物可以保持水的清洁。