quadruple
/kwɑˈdrupəl/
a set of four similar things considered as a unit
中文释义：四件套；四倍
The quadruple of numbers 2, 4, 6, 8 forms a sequence.
数字2、4、6、8这四个数组成一个序列。
They ordered a quadruple of tickets for the concert.
他们订购了四张音乐会门票。
/kwɑˈdrupəl/
a set of four similar things considered as a unit
中文释义：四件套；四倍
The quadruple of numbers 2, 4, 6, 8 forms a sequence.
数字2、4、6、8这四个数组成一个序列。
They ordered a quadruple of tickets for the concert.
他们订购了四张音乐会门票。