Desmogen
维管束原
🗣️ 情景例句
John is tied up at the present time.
John现在有事。
On a crowded train, one comes in contact with many people.
在拥挤的火车里面，会和许多人接触。
What's the matter, Granny? Can I help you?
什么事，老大娘？我能帮你吗？