[mass noun]the quality of someone's character or the level of their ability
(人的)品质;能力,才能
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they could ill afford to lose a man of his caliber .他们不能失去像他那样才华横溢的人。
the standard reached by something
标准;水准
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educational facilities of a very high caliber .具有很高标准的教育设施。
the internal diameter or bore of a gun barrel
(枪管的)内径;口径
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[in combination]
a.22 caliber repeater rifle .一支0.22口径的连发枪。
the diameter of a bullet, shell, or rocket
(子弹、炮弹或火箭的)直径。
the diameter of a body of circular section, such as a tube, blood vessel, or fibre
(管、血管或纤维等圆截面的)直径。
"mid 16th cent. (in the sense ‘social standing or importance’): from French, from Italian