Polygalacturonic acid
[化] 聚半乳糖醛酸
🧩 词语组成解析
🗣️ 情景例句
Oh, you really had a bad day.
哦 你们真的没玩好。
We couldn't help the accident.
我们未能防止事故发生。
He was rather elderly with grey hair and clear blue eyes.
他上了年纪，有着灰白的头发和明亮的蓝眼睛。