infallibly

The morning alarm clock infallibly wakes him up at 6:00 AM every single day.

(Chinese) 每天早上，闹钟总是准时在6点将他唤醒，从不失灵。

This specific investment strategy has infallibly produced profits for the firm over the last decade.

(Chinese) 在过去的十年里，这种特定的投资策略总是能为公司带来利润。