Pmmu
[计] 页式存储器管理部件
🗣️ 情景例句
Birds are good pets, they can wake you up by singing in the morning.
鸟是很好的宠物，它们早上的歌声可以将你从梦中唤醒。
Have you taken a train?
你坐过火车吗？
Yes, he is.He's climbing the tree.
是的，他也在花园里。他正在爬树。