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
Just make the few changes I suggested and your letter will be perfect!
只要改动我提到的个别地方，你的信就会很完美了。
She likes to keep up with the latest fashion.
她喜欢赶时髦。
What's your plan for the summer vacation?
你暑假打算干什么？