不自量力: overrate one's abilities
Examples:
沉重的铁门嘲笑我们不自量力, 无法打开.
The heavy steel doors mocked our attempts to open them.
他试图独自建桥,真是不自量力.
In trying to build the bridge himself,he had bitten more than he could chew.
不自量力;做超过能力的投资或计划
overextend oneself
遭到丢脸的挫折(尤指不自量力者)
Suffer a humiliating and undignified setback,esp after attempting sth that is too ambitious
每个贷款使用者都有可能作出不自量力的事.
Any users of credit may overextend themselves.
他不自量力想谋求经理职位,但没成功.
He overreached himself in trying to get the manager's job.