如果你希望获得知识，你必须学习英文。
If you wish (hope) to get knowledge, you must learn English.
如果你希望获得知识，你必须学习英文。
你如果要学习英文，你必须先找一位称职的老师。
If you want to learn English, you must first find a competent teacher.
你如果要学习英文，你必须先找一位称职的老师。
If you want to learn English, you must first find a competent teacher.
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