无能为力

面对复杂多变的外部环境，我们做事必须做到无能为力。

miàn duì fù zá duō biàn de wài bù huán jìng, wǒ men zuò shì bì xū zuò dào wú néng wéi lì.

Faced with a complex and changing external environment, we work helplessly.

这种罕见的遗传性疾病目前在医学界尚无特效药，医生们也感到无能为力。

zhè zhǒng hǎn jiàn de yí chuán xìng jí bìng mù qián zài yī xué jiè shàng wú tè xiào yào, yī shēng men yě gǎn dào wú néng wéi lì.

There is currently no cure for this rare genetic disease in the medical community, and doctors feel helpless.