他有着坚定的信念。

Tā yǒu zhe jiāndìng de xìnniàn.

He has firm beliefs.

遇到困难时，她的眼神依然很坚定。

Yù dào kùnnan shí, tā de yǎnshén yīrán hěn jiāndìng.

When facing difficulties, the look in her eyes is still very firm.

只要目标坚定，你就不会被小小的失败打倒。

Zhǐyào mùbiāo jiāndìng, nǐ jiù bú huì bèi xiǎoxiǎo de shībài dǎdǎo.

As long as your goal is firm, you won't be defeated by small failures.