他们为了生存而拼命努力。

tāmen wèile shēngcún ér pīnmìng nǔlì.

They strive desperately for survival.

面对困境，他们拼命奋斗。

miànduì kùnjìng, tāmen pīnmìng fèndòu.

Faced with adversity, they fought desperately.

在比赛中，运动员拼命地奔跑。

zài bǐsài zhōng, yùndòngyuán pīnmìng de bēnpǎo.

In the competition, athletes run desperately.