The system has 256 MB RAM, expandable to 2GB.

这个系统内存 256 兆字节，可扩充到 2 千兆字节。

《牛津词典》

In this example, 201.3 MB have been allocated to the IBMDEFAULTBP, an over-allocation for a system with only 357 MB of memory.

在这个例子中，有201.3 MB内存被分配给IBMDEFAULTBP，对于只有357 MB内存的系统来说，这是一种过度的分配。

youdao

Males are consuming more data than females with 75 MB used vs. 53 MB for females.

男性比女性摄入更多的资料以75 MB的使用和对女性约53个万位。

youdao

MB-associated individuals are sent as our country's "goodwill ambassadors" to foreign Muslim nations and communities.

CENTERFORSECURITYPOLICY: The Tipping Point: Embracing the Muslim Brotherhood

Additionally, the optional MB-D14 Multi Power Battery Pack extends the grip for comfort and can effectively double the battery capacity when using two batteries.

ENGADGET: Nikon unveils lightweight, full-frame D600 DSLR -- hands-on and low-light samples (video)

Previously limited to only 40 megabytes, the newer matchbook-sized PocketZip disks unveiled this week will hold 100 MB--as much as Iomega's first Zip disks when they first came to market in the mid-1990s.

FORBES: Ten O'Clock Tech: Mini Megabytes