这本小册子印有s.a.，所以我们无法确定它的出版年份。

This pamphlet is marked ___s.a., so we can't determine its publication year.

她时尚的着装和自信给了她充分的自我确信。

Her stylish outfits and confidence give her plenty of ___self-assurance.

这家公司在比利时以股份有限公司的形式注册。

The company was registered as an ___S.A. in Belgium.