A good dictionary is indispensable for learning a foreign language.
一本好词典是学习外语必备的。
She has mastered a foreign language by the aid of a grammar and dictionary.
她借助语法书和词典掌握了一门外语。
She has mastered a foreign language by aid of a grammar and dictionary.
她借助语法书和词典掌握了一门外语。
She has mastered a foreign language by aid of a grammar and dictionary.
她借助语法书和词典掌握了一门外语。
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