Xanthine
n. 黄质, 黄嘌呤\\n[化] 黄嘌呤
🗣️ 情景例句
OK, Betty, Tim, and Frank.
好， Betty ，Tim ，Frank。
Don't forget to print airmail on the letter.
不要忘记在信封上印上航空邮件
As soon as he opened his mouth, everyone burst out laughing.
但他刚一开口说话，人们便哄堂大笑起来。