Glucolactone
[医] 葡萄糖酸内酯
🗣️ 情景例句
How big is your family?
你家有几口人？
He has gone to America.
他去美国了。[动作结束后的结果持续至今]
He did not know from which part of Africa his ancestor had come.
他不知道祖先来自非洲的什么地方。