Lactone
n. [化] 内酯
🗣️ 情景例句
I'm most grateful to you for taking so much trouble to explain the best way of getting there.
你不厌其烦地给我解释去那里的最佳途径，我对些深表感激。
Dogs wag their tails not so much in love to you as your bread.
狗摇尾巴，爱的是面包。
and a very firm hand must be employed in the early stages.
因此开始阶段需要有一位强有力的老手。