例句：
How can I be of assistance to you today?
今天我能為您做些什么？
The value of this kind of assistance is fiercely debated.
對這種協助的價值存在很多質疑。
He can walk only with the assistance of crutches.
他只能靠一副拐杖走路。
The customer is choosing a computer with the assistance of the salesperson.
顧客在售貨員的協助下正在選擇計算機。