The Difficulty of Learning Chinese 学习中文的困难
the difficulty of language learning 语言学习难度
He tried to explain to me the difficulty of learning to cook from books.
他向我解释照着书本学习烹饪的困难。
In difficulty of learning, music lies somewhere in between speaking and writing.
从学习难度上看,音乐在说话和写作的中间地带。
What have happened reminds him of the difficulty of learning and researching.
这件事让他想到你们的学习和研究上有很多困难。
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