Biconcave
a. 双凹的\\n[医] 双凹[形]的
🏥 医学释义
双凹面的，双凹（形）的
🗣️ 情景例句
What do you often do in your spare time?
你在业余时间都干些啥？
I want my steak well-done.
我想要熟透的牛排。
He sat in the darkness and listened to the people around him.
他坐在黑暗处，听着周围的人在讲话。