这种草生命力很顽强，冬天也不会死。

Zhè zhǒng cǎo shēngmìnglì hěn wánqiáng, dōngtiān yě bú huì sǐ.

This kind of grass is very tough and won't die even in winter.

面对困难，她表现出顽强的意志和冷静的头脑。

Miànduì kùnnan, tā biǎoxiàn chū wánqiáng de yìzhì hé lěngjìng de tóunǎo.

Facing difficulties, she showed a strong will and a calm mind.

他性格顽强，从不轻易放弃。

Tā xìnggé wánqiáng, cóng bù qīngyì fàngqì.

He has a tenacious character and never gives up easily.