I thought it was a tragic mistake.

我认为这是一个悲剧性的错误。

youdao

What a tragic mistake.

一个多么悲剧性的错误。

youdao

Succumbing to those arguments would be a tragic mistake.

如果屈从于那些叫嚣撤退的声音，那么这将会是一个悲剧性的错误。

youdao

For starters, the Bush Administration made an inexplicable and tragic mistake with respect to its campaign management of the Iraq issue.

CENTERFORSECURITYPOLICY: Tragedy of errors

People make a tragic mistake when they assume power will only be used for purposes of which they approve by people of whom they approve.

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On January 12, 1950, then-Secretary of State Dean Acheson made a tragic mistake: When publicly describing those areas of vital interest to the United States, he omitted the Republic of Korea (ROK), suggesting that it was not within the "defensive perimeter" for which the United States would fight.

CENTERFORSECURITYPOLICY: Center for Security Policy | Must History Repeat Itself? Congress Should Not Invite North Korean Aggression