久久国产欧美日韩精品,日韩国产精品久久久久久亚洲,99视频精品全部免费免费,91精品国产综合久久走光

“黑板擦”的英語(yǔ)可以翻譯為：lackboard eraser ...

黑板擦干凈了.The blackboard has been wiped clean.老師建議我們課后把黑板擦了.The teacher suggested that we ( should ) clean the blackboard after class.你可以用黑板擦把粉筆印擦掉.You can rub out the chalk marks with the eraser....