Dilactone
[机] 二内酯
🗣️ 情景例句
He is on another line right now.
他正在接另一个电话。
He's a composer of popular songs.I like his music a lot.
他是流行歌曲作曲家，我很喜欢他的音乐。
Cave exploration, or pot-holing, as it has come to be known, is a relatively new sport.
洞穴勘查——或洞穴勘探——是一项比较新的体育活动。