The dumm man wrote his responses on a notepad.

哑的男人在笔记本上写下了他的回答。

The dumm child expressed his feelings through drawings.

哑的孩子通过画画表达他的感受。

She learned to read lips to understand her dumm friend.

她学会了读唇语以理解她哑的朋友。

The doctor explained that the patient was dumm and could not speak.

医生解释说病人是哑的，不能说话。

The teacher used sign language to communicate with the dumm student.

老师用手语与哑的学生交流。