request [ri'kwest] n. 请求;需要1. a formal message requesting something that is submitted to an authority正式的消息,提交给一个权威/当局以要求某事/物。requirement [ri'kwaiəmənt] n. 要求;必要条件;必需品requirement [ri'kwaiəmənt] n.1. required activitythe requirements of his work affected his health 2. anything indispensableallow farmers to buy their requirements under favorable conditions 3. something that is required in advance看英文意思很容量区分。