about pb
关于铅
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Ancestry.com has about 2 million subscribers and stored 11 billion records with a total storage capacity of 4 petabytes (PB).
FORBES: The Ascent of Storage-Preserving Family History
应用推荐
模块上移
模块下移
不移动