guān jiàn
摸清情况是解决问题的关键
mō qīng qíng kuàng shì jiě jué wèn tí de guān jiàn
Understanding the situation clearly is the key to solving the problem
办好学校关键在于提高教学质量。
bàn hǎo xué xiào guān jiàn zài yú tí gāo jiào xué zhì liàng
The key to running a good school lies in improving teaching quality
关键问题
guān jiàn wèn tí
Key issue/problem