avail /əˈveil/ I. n.［u］ (一般用于否定句或疑问名中)效用，利益，帮助：of no(little) avail 毫无用处（用处很少）；without avail 无益，无效，徒劳［考句］Attempts to persuade her to stay after she felt insulted were of no avail.她已感觉受到侮辱，劝她留下没有用。‖II. vt. & vi. 有用于，有助于：The medicine did not avail against the disease. 这药治不了那种病。Money will not avail you after you are dead. 你死之后,钱对你一点用处都没有。avail (oneself) of 利用：We avail ourselves of this opportunity to express our heartfelt gratitude to you. 我们借此机会向你们表示衷心的感谢。
availability /əˌveiləˈbiliti/ n. [u] 1. 有效；有益；可利用性：The availability of cheap long-term credit would help small business.低利息的长期贷款对小型企业会有帮助。The availability of public transport is also part of the equation.公共交通的便利也是考虑因素之一。2. 可得到的东西，可得性：Before travelling we must ensure the availability of petrol and oil.旅行前，我们必须确保能够买到汽油和机油。
available /əˈveiləbl/ adj. 可以找到的，可以利用的；可取得联系的(常放在被修饰名词的后面)；有效的：There was no ambulance available.找不到救护车。This ticket is available until the end of the month. 这张票到月底才过期。The season ticket is available for three months. 季票有效期为三个月。You must set every available man to work. 你必须给所有能找到的人安排工作。This information is freely available to anyone wishing to see it.想看这条信息的人可以随意看。［考句］ None of the servants were available when Mr. Smith wanted to send a message.当史密斯先生想递送信息时，没有一个仆人在场。［考句］Convenience foods which are already prepared for cooking are available in grocery stores.经过加工随时可供烹调的方便食品在杂货店可以买到。
