Methanedicarboxylic acid
[建] 丙二酸
🧩 词语组成解析
🗣️ 情景例句
John Marchetta gave me my start here six years ago,
六年前 ，John Marchetta让我在这儿起步，
Could you tell me where I can find these books?
您能告诉我在哪儿能找到这些书吗？
Mum, I don't feel very well.
妈，我感觉不舒服。