1 sentence

1. 历年考题的难度都保持在相对稳定的水平。

   lì​nián kǎo​tí de nán​dù dōu bǎo​chí zài xiāng​duì wěn​dìng de shuǐ​píng.

   The difficulty of the exam questions over the years has remained relatively stable.

   Source: Dong Chinese Dictionary