Pmmu
[计] 页式存储器管理部件
🗣️ 情景例句
It's not difficult.
这不难。
Great boast, small roast.
说得天花乱坠，成事微乎其微。
There has long been a superstition among mariners that porpoises will save drowning men by pushing them to the surface, or protect them from sharks by surrounding them in defensive formation.
长期以来，海员中流传着一种迷信的说法，认为海豚会把快要淹死的人托到水面，救人性命；或在人们周围列队保护，使他们免遭鲨鱼伤害。