Pmmu
[计] 页式存储器管理部件
🗣️ 情景例句
That's better than being behind.
这总比落后要好。
Reputation is often got without merit and lost without fault.
无功得名是常事，无过失名也是常事。
The development of such a telescope will be one of the great astronomical projects of the twenty-first century.
而开发这样一台望远镜将会是21世纪天文学的一个重要的研究课题。