事实上，勤奋是掌握一门外语的关键的翻译：In fact, diligence is the key to mastering a foreign language 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

In fact, hard to master a foreign language is the key

In fact, diligence is the key to mastering a foreign language

In fact, diligent is grasps a foreign language the key

In fact, hard work is to master a foreign language the key

In fact, diligence is the key to mastering a foreign language