难精通
Difficult to master
以上为机器翻译结果，长、整句建议使用 人工翻译 。
英语是一门容易学但是难精通的语言。
English is a language easy to learn but difficult to master.
youdao
English his a language easy to learn but difficult to master.
对要精通口琴也许是最坚难的、最重要的一步。
It's probably the hardest and most important step in mastering the harp.
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模块下移
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