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thirty    音标拼音: [θ'ɚdi] [θ'ɚt,i]
num. 三十,30
n. 30年代;30岁,3039岁的时期

三十,3030年代;30岁,3039岁的时期

thirty
adj 1: being ten more than twenty [synonym: {thirty}, {30}, {xxx}]
n 1: the cardinal number that is the product of ten and three
[synonym: {thirty}, {30}, {XXX}]

Thirty \Thir"ty\, a. [OE. thritty, AS. [thorn]r[imac]tig,
[thorn]rittig; akin to D. dertig, G. dreissig, Icel.
[thorn]rj[=a]t[imac]u, [thorn]rj[=a]tigi, [thorn]rir teger,
Goth. [thorn]reis tigjus, i.e., three tens. See {Three}, and
Ten, and cf. {Thirteen}.]
Being three times ten; consisting of one more than
twenty-nine; twenty and ten; as, the month of June consists
of thirty days.
[1913 Webster]
[1913 Webster]


Thirty \Thir"ty\, n.; pl. {Thirties}.
1. The sum of three tens, or twenty and ten; thirty units or
objects.
[1913 Webster]

2. A symbol expressing thirty, as 30, or XXX.
[1913 Webster]



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