没听过超过一级词汇的歌词？

Not used to hearing a verse that uses over first grade vocabulary words?

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唯有在失去健康之后，我们才能了解大学英语四级词汇书健康的重要。

Only after you lose your health, will you realize the importance of health.

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大学英语四级词汇在轮机英语中的单篇覆盖率，在四个分语料库的单篇覆盖率以及总覆盖率。

The major research questions are the following:(1) The coverage rate of CET-4 words in MEE texts and in the four sub-corpora of MEE corpus.

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