This is the 3151st most frequent Chinese word.
主因
Main cause.
主因 is used to mean 'main cause', indicating a primary factor contributing to the mentioned issue.
教育水平不足是贫困的主因之一。
Insufficient education levels are one of the main causes of poverty.
主因 denotes 'main cause', emphasizing the fundamental reason behind a recurring phenomenon.
该地区洪水频发的主因是气候变化。
The main cause of frequent floods in the region is climate change.
主因 signifies 'main cause', specifying the direct reason for the described impact on wildlife.