Concavoconcave
[医] 对凹的, 双凹的
🗣️ 情景例句
Look in the real-estate section of Sunday's Times.
查一查星期天的 纽约时报 房地产版。
I asked him to clean it for me, but he wouldn't.
我请他帮我清理，但是他不肯。
For example, with their help China can send its TV and radio programmes to the other side of the world.
例如，在卫星的帮助下，中国能把自己的电视及广播节目传送到地球的另一边。