Memantine
[医]美金刚，二甲金刚胺，美金刚胺
🗣️ 情景例句
How about a date with your grandfather?
和你爷爷约个会好吗？
Step after step the ladder is ascended.
按部就班，循序渐进。
Walt invented the steam engine.
瓦特发明了蒸汽机。