I don't quite understand some difficult points in this unit.

這個(gè)單元有些難點(diǎn)我不太明白。

語言點(diǎn)：注釋：some difficult points一些難點(diǎn)

這篇材料你能聽出多少？點(diǎn)擊這里做聽寫，提高外語水平>>