The skill of speaking a foreign language takes time to acquire.
讲一种外国语的能力需要花很长时间才能获得。
Master a foreign language; acquire proficiency in reading professional written publications in foreign language.
掌握一门外语，能熟练地阅读本专业的外文书刊。
You must work hard to acquire a good command of a foreign language.
你必须努力用功，才能具备有良好的外语能力。
You must work hard to acquire a good command of a foreign language.
你必须努力用功，才能具备有良好的外语能力。
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