理直气壮

bì xū duì shí qíng xiōng yǒu chéng zhú cái néng gòu lǐ zhí qì zhuàng de dào chù zhǐ zé bié rén

必须对实情胸有成竹才能够理直气壮地到处指责别人。

You must be certain of your facts before you start flinging accusations around at people.

wǒ men yào lǐ zhí qì zhuàng de chàng dǎo kē xué fǎn duì mí xìn

我们要理直气壮地倡导科学，反对迷信。

We must advocate science with confidence and oppose superstition.

zhǐ yǒu dà gōng wú sī shuō huà zuò shì cái néng lǐ zhí qì zhuàng

只有大公无私，说话做事才能理直气壮。

Only by being selfless can we speak and do things with confidence.

lǐ zhí qì zhuàng de bó chì

理直气壮地驳斥

justly and forcefully refute

lǐ zhí qì zhuàng de zuò dá

理直气壮地作答

reply confidently

jiǎng huà lǐ zhí qì zhuàng

讲话理直气壮

speak with great confidence