她完全低估了她的竞争对手，结果输了比赛。

She completely ___underestimated her competitor and lost the match.

不要低估你的同事；他们可能隐藏着才能。

Don't ___underestimate your colleagues; they might have hidden talents.

许多人低估了新经理，但她能力非凡。

Many people ___underestimate the new manager, but she is incredibly capable.