Eng: Using a

用手杖

Using a cane

用光筒

Using a flashlight

使用家用電源插座供電

Using a household power outlet for electricity

聲音極輕

Using a hushed voice

使用地圖

Using a map

使用模型

Using a model

拿紙筆來算

Using a pen and paper to calculate

聲音極輕

Using a quiet voice

用類似的練習來

Using a similar exercise to