Pipecolinic acid
[化] 2-哌啶酸
🧩 词语组成解析
🗣️ 情景例句
It was wet yesterday.
昨天下雨。
Opportunity seldom knocks twice.
机不可失，失不再来。
yet we might grudge paying a surgeon a high fee for offering us precisely this service.
但就在外科大夫给我们提供了这种服务后，我们却可能为所支付的昂贵的费用而抱怨。