学习这门课程的难点在于理解理论。
xuéxí zhè mén kèchéng de nándiǎn zàiyú lǐjiě lǐlùn 。
The difficulty in studying this course lies in understanding the theory.
老师帮助我们克服了这个难点。
lǎoshī bāngzhù wǒmen kèfú le zhègè nándiǎn 。
The teacher helped us overcome this difficulty.
这道题的难点是什么?
zhè dào tí de nándiǎn shì shénme ?
What is the difficulty of this question?