requirement [rɪˈkwaɪrmənt]
n.\x09要求;必要條件;必需品,需要量;資格
[例]The company recommended shareholders oppose the requirement.
該公司建議股東反對這個要求.
demand [dɪˈmænd]
n.\x09需求;需要;要求,請求;銷路
[例]And that means a continuing drive to reduce oil demand.
而這也意味著要做到持續(xù)降低對石油的需求.
need[nid]
n.需要;需要的東西;責任;貧窮
[例]I feel a need to talk to you about it.
我覺得有必要跟你談談那件事.

request [rɪˈkwɛst]
n.要求;需要;所請求的事物;申請書
[例]I will oblige any sincere request.
我會答應任何誠意的請求.
necessity [nəˈsɛsɪti]
n.必要（性）;（迫切）需要;必需品;自然規(guī)律
[例]Asem has yet to prove its necessity.
亞歐會議的必要性還有待證實.