to think or guess that the amount, cost or size of sth is larger than it really is 估计过高；高估◆The firm failed because it overestimated sales and underestimated costs. 这家企业破产的原因是高估了销售额而低估了成本。
to think that sb is better, stronger, etc. than they really are 评价过高◆Have we overestimated the competition? 我们对这一竞争是不是评价过高了？◆They overestimated his ability when they promoted him. 在提拔他时，他们过高估计了他的能力。