如果领导说话不算数，就会失去威信。

Rúguǒ lǐngdǎo shuōhuà bù suànshù, jiù huì shīqù wēixìn.

If a leader does not keep their word, they will lose authority.

这位老师很有威信，学生都愿意听他的。

Zhè wèi lǎoshī hěn yǒu wēixìn, xuéshēng dōu yuànyì tīng tā de.

This teacher has great authority, and all the students are willing to listen to him.

建立威信需要时间，更需要一贯的公正和诚实。

Jiànlì wēixìn xūyào shíjiān, gèng xūyào yíguàn de gōngzhèng hé chéngshí.

Building authority takes time and, even more, consistent fairness and honesty.