In any form of instruction an optimum teacher-to-pupil ratio is important, especially in youth and high school baseball.

在任何形式的教学中，特别对于青少年或高中棒球，师生比例很重要。

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In recent years, with the rapid expansion of graduate enrollment, pupil-teacher ratio has increased rapidly.

近年来，硕士研究生招生规模迅速扩大，生师比也增长迅速。

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In recent years, with the rapid expansion of graduate enrollment, pupil-teacher ratio has increased rapidly.

近年来，硕士研究生招生规模迅速扩大，生师比也增长迅速。

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