名詞 underestimate:

1. an estimation that is too low; an estimate that is less than the true or actual value
   同義詞：underestimation, underrating, underreckoning

動詞 underestimate:

1. assign too low a value to
   同義詞：undervalue
2. make a deliberately low estimate
   同義詞：lowball
3. make too low an estimate of
   同義詞：underrate

1. Don't underestimate the difficulties of the work.
   不要低估了這項工作的艱巨性。
2. You shouldn't underestimate the risks of the enterprise.
   你不應低估這一計畫的風險。
3. I underestimated the time we needed by 30%.
   我把我們需要的時間低估了30%。
4. Never underestimate your opponent.
   千萬不要低估對手。