lǐng yù
思想领域
sīxiǎng lǐngyù
ideological field/realm of thought
生活领域
shēnghuó lǐngyù
field of life/life domain
在自然科学领域内，数学是最重要的基础。
zài zìrán kēxué lǐngyù nèi, shùxué shì zuì zhòngyào de jīchǔ.
In the field of natural sciences, mathematics is the most important foundation.