thrice

柯林斯詞典

1. ADV Something that happens thrice happens three times. 三次[老式]
They should think not twice, but thrice, before ignoring such advice. 對於這種性質的建議，他們應該再三考慮後才決定是否予以忽略。
2. ADV You can use thrice to indicate that something is three times the size, value, or intensity of something else. 三倍[老式] [ADV n]
...moving at thrice the speed of sound. ...以三倍音速運動。