unbeatable

With a winning streak of forty matches, the chess grandmaster seemed completely unbeatable this season.

(Chinese) 凭借四十场连胜的纪录，这位象棋大师本赛季似乎完全是不可战胜的。

The department store offered an unbeatable price on laptop computers during their annual anniversary sale.

(Chinese) 这家百货公司在周年庆促销期间为笔记本电脑提供了无与伦比的低价。