People need to be satisfied of the need for a new system.
需要使人們明白建立一個新體系的必要性。
Contact with other people is a basic human need.
和他人接觸是人的基本需要。
We need to evaluate how well the policy is working.
我們需要對這一政策產生的效果作出評價。
In case you should need any help, here's my number.
萬一你需要幫助的話，這是我的電話號碼。
Health care must be at the service of all who need it.
醫療保健機構必須為所有需要者提供服務。