先天 Words — Dong Chinese Dictionary

xiāntiān HSK7

innate

先天性 xiāntiānxìng congenital

congenital; intrinsic; innate
先天不足 xiāntiānbùzú congenital deficiency

to suffer from a congenital deficiency or have an inherent weakness
先天与后天 xiāntiānyǔhòutiān nature vs nurture

nature versus nurture
先天性缺陷 xiāntiānxìngquēxiàn birth defect
先天愚型 xiāntiānyúxíng Down syndrome

(old) Down syndrome; trisomy 21
先天下之忧而忧，后天下之乐而乐 xiāntiānxiàzhīyōu'éryōu, hòutiānxiàzhīlè'érlè selfless devotion

to be the first to worry about affairs of state, and the last to enjoy oneself (quotation from the essay "On Yueyang Tower" by Song writer Fan Zhongyan)
先天不足，后天失调 xiāntiānbùzú, hòutiānshītiáo flawed foundation

to be problematic from the start and worsen over time due to unfavorable conditions or mismanagement