Kras
n. 喀斯特（岩溶地貌）
🗣️ 情景例句
We are quite interested in the joint venture.
我们对合资经营很感兴趣。
The two parties involved in a contract have the obligation to execute the contract.
合同双方有义务履行合同。
Best wishes,
衷心地祝福你，