noun🔗Share九，数字九。 The digit or figure 9."The number nine is written with the digit nine. "数字“九”是用数字9来书写的。numbermathessentialChat with AIVocabulary GamePractice Reading
noun🔗Share九点牌 A playing card with nine pips."My brother used the nine of spades in his card game. "我哥哥在他的牌局里出了一张黑桃九点牌。numbergameitemessentialChat with AIVocabulary GamePractice Reading
noun🔗Share九毫米手枪, 九毫米半自动手枪 A nine-millimeter semi-automatic pistol."The police officer carefully handled the nine. "警察小心地处理那把九毫米手枪。weaponmilitaryessentialChat with AIVocabulary GamePractice Reading
noun🔗Share九， 个九 (gè jiǔ)。 (usually in the plural) A statistical unit of proportion (of reliability, purity, etc.)."They guaranteed that our Web site would have 99.99% uptime, or four nines."他们保证我们的网站会有99.99%的正常运行时间，也就是四个九的可靠性。statisticsmathnumberessentialChat with AIVocabulary GamePractice Reading
noun🔗Share棒球队，九人阵容 A baseball club, team, or lineup (composed of nine players)."The baseball team's nine played a strong game against the rivals. "这支棒球队的九人阵容在对阵劲敌时表现出色。sportgroupessentialChat with AIVocabulary GamePractice Reading
numeral🔗Share九 A numerical value equal to 9; the number following eight and preceding ten."My little sister is nine years old. "我妹妹今年九岁了。numberessentialChat with AIVocabulary GamePractice Reading
numeral🔗Share九 Describing a group or set with nine elements."A cat has nine lives."猫有九条命。numberessentialChat with AIVocabulary GamePractice Reading
