Melanogallic acid
[医] 黑鞣酸
🧩 词语组成解析
🗣️ 情景例句
Have you ever been to Nanjing?
你曾去过南京吗？
We prepared a picnic lunch and drove down by the river.
我们准备了野餐午餐并沿河边向下开车。
I think you probably know China has adopted a flexible policy in her foreign trade.
我想你也许已经了解到中国在对外贸易中采取了灵活的政策。