Underdense
欠密的
🗣️ 情景例句
I have just one--playing golf. It's expensive, but it's a lot of fun.
我只有一种爱好，打高尔夫球。花费很高，但非常有趣。
Please accept my congratulations on your recovery.
请接受我祝贺你康复。
It's a fine day today, and everyone is busy.
今天的天气很好，大家都很忙。