c. 1200, from Old English þriga, þriwa "thrice" (from þrie "three;" see three) + adverbial genitive -es, changed c. 1600 to -ce to reflect voiceless pronunciation.
实用例句
1. The metal had been valued at twice or thrice its current price.
这种金属以前的估价是目前价格的两到三倍。
来自柯林斯例句
2. They should think not twice, but thrice, before ignoring such advice.
