Lactone
n. [化] 内酯
🗣️ 情景例句
anyway.
不管怎么说。
It's not too heavy,but I don't know the exact weight.
它不是太重的，但是我不知道准确的重量。
All that afternoon, I jumped and sang and did all kinds of things.
那天整个下午我跳呀，唱呀，做出各种样子逗她。