The head of the International Red Cross Federation's Tsunami unit, Al Panico,says his agency received nearly $3 billion, from the general public.

VOA: standard.2009.12.26

This is the SI unit, the systeme international unit for electric charge.

这是国际单位制，电荷的国际单位制。

麻省理工公开课 - 固态化学导论课程节选