| Expression | 经过五年的艰苦工作，他们完成了一套高质量的教材。该书分为六级，从小学4年级到初中3年级。 |
|---|---|
| Meaning | After five years of hard work they presented a high quality textbook, which consisted of six levels from grade4 to grade9. |
| Reading | jīng guò wǔ nián de jiān kù gōng zuò， tā men wán chéng le yī tào gāo zhì liàng de jiào cái。 gāi shū fèn wèi liù jí， cóng xiǎo xué4 nián jí dào chū zhō3ng nián jí。 |
Tags: hsk3-limited5-part3
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