availKK [əˋvel] /əˈveɪl/发音动词1利用、善用正式,avail oneself ofGuests may avail themselves of the free shuttle to the airport.住客可以利用前往机场的免费接驳车。2有用、有助益正式All his apologies availed nothing once the trust was gone.信任一旦消失,他再怎么道歉也没有用。名词1效用、益处正式,多用于否定句Further argument would be of little avail at this stage.在这个阶段再争论下去也没什么用。片语1徒劳无功、白费to no availWe searched the whole building for the keys, but to no avail.我们把整栋大楼都找过了钥匙,却徒劳无功。用这个字练口说→相关片语to no avail