难懂
word C2- difficult to understand
Its characters
From the library
』接连便是难懂的话，什么『君子固穷』，什么『者乎』之类，引得众人都哄笑起来；
那些晦涩难懂的传统文献让他觉得枯燥乏味，仿佛无论投入多少精力都无法触及知识的尽头。
她发现，前人的数学著作往往写得深奥难懂，普通人很难入门。
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