他的平均绩点是3.5，这让他获得了奖学金。

His ___G.P.A. is 3.5, which earned him a scholarship.

这个音频系统需要一个低噪声的G.P.A.以获得清晰的音效输出。

This audio system needs a low-noise ___G.P.A. for clear sound output.