Dicoelous
[医] 双凹的; 有两腔的
🗣️ 情景例句
No problem.
没问题。
The fork is dirty, Would you bring me a clean one, please?
这叉子是脏的，请你拿个干净的给我。
What will be the population of the world in the year 2000?
2000年世界人口将是多少？