calibre

这把猎枪使用12号口径的子弹。

This shotgun uses 12-gauge ___calibre shells.

这场国际象棋比赛吸引了众多高水平的选手参加。

The chess tournament attracted players of exceptional ___calibre.

这所大学以培养高质量的学生而闻名。

This university is known for producing students of high ___calibre.