Lactones
(lactone 的复数) n.[化] 内酯
🗣️ 情景例句
I'm leaving you.
我要离开你了。
The whole carton is packed with double straps, each corner of the carton consolidated with metal angles.
纸箱外加了两道箍，每个箱角都用金属角加固。
We can offer you this in different levels of quality.
这产品我们有三种不同等级的品质。