2 sentences for 后天 (hòu​tiān — acquired)

1. 这种能力是先天的，不是后天学来的。

   zhè zhǒng néng​lì shì xiān​tiān de, bù shì hòu​tiān xué​lái de.

   This ability is innate, not acquired.

   Source: Dong Chinese Dictionary

2. 他的成功更多是靠后天努力，而非天赋。

   tā de chéng​gōng gèng duō shì kào hòu​tiān nǔ​lì, ér fēi tiān​fù.

   His success is due more to subsequent hard work than to innate talent.

   Source: Dong Chinese Dictionary