thrice

柯林斯词典

1. ADV Something that happens thrice happens three times. 三次[老式]
They should think not twice, but thrice, before ignoring such advice. 对于这种性质的建议，他们应该再三考虑后才决定是否予以忽略。
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. ...以三倍音速运动。