triple
n. 三倍之数,三个一组adj. 三重的,三方面的, 三部分合成的,三倍的vt. 三倍于,(使)成为三倍 vi. 增至三倍 [He had a ～ celebration yesterday because it was his birthday, his graduation day and his engagement day. 昨天是他的三重庆祝日: 生日,毕业的日子和定婚日.
He ～s his income. 他收入增加三倍.
a ~ mirror 三面镜
We must ~ our efforts. 我们必须作出三倍的努力
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