What is “老大难” (lǎo dà nán)?

"老大难" (lǎo dà nán) means a knotty problem, which is complicated and difficult to resolve. It may take a long time, but finally goes nowhere.

“老大难”是指复杂的，难以解决或者是很长时间却没有进展的事情。

Examples: 

rén men wǎng wǎng yǐ wéi bù ān quán de zhù shè zuò fǎ shì yí ge lǎo dà nán wèn tí, bù róng yì jiě jué. 

人们往往以为不安全的注射做法是一个老大难问题，不容易解决。

Unsafe injection practices are often viewed as a chronic problem with no easy solution.

zhè ge bān zhì xù luàn, chéng jì chà, shì quán xiào yǒu míng de lǎo dà nán bān jí.

这个班秩序乱，成绩差，是全校有名的老大难班级。

The class is notorious for its disorder and poor performance. It's a well-known outstanding problem of the school. 

The article is translated and editted by Chinlingo. Please indicate the source for any use, reproduction or transfer. 

本文由Chinlingo编译后发布，如需转载，请标明来源。