triplet

名词 triplet:

1. the cardinal number that is the sum of one and one and one
   同义词：three, 3, III, trio, threesome, tierce, leash, troika, triad, trine, trinity, ternary, ternion, tercet, terzetto, trey, deuce-ace
2. one of three offspring born at the same time from the same pregnancy
3. a set of three similar things considered as a unit
   同义词：trio, triad, triple

1. His wife gave birth to triplets.
   他妻子生了三胞胎。