例句：
The sofa also functions as a bed.
這沙發(fā)還可當床用。
My camera has manual and automatic functions.
我的照相機有手調(diào)和自動兩種功能。
Both motor and sensory functions are affected.
運動功能和感覺功能都受到影響。
The hall provided a venue for weddings and other functions.
大廳給婚禮和其他社會活動提供了場所。