Dilactone
[机] 二内酯
🗣️ 情景例句
They come back here for lunch,
他们回到这儿来吃午餐，
I don't know him well.
我跟他不熟。
It took him some time to connect the long rubber pipe to the air supply pipe that ran round the port, but at last it was done and as a result work was able to progress much faster.
他花了不少时间把长长的橡胶管接到铺设在码头周围的空气供应管上，最后他终于把它们连接起来，工作因而进展得更快。