?白费时间
... bark at the moon徒劳 too far north过于狡猾 burn daylight白费时间 ...
?白日点灯
... burn daylight白日点灯；徒劳无功 let daylight into使…明朗起来 throw daylight on sth披露〔阐述〕某事 ...
?徒劳无功
?多此一举
of which there is plenty; burn daylight; ... 何必多此一举 why take the trouble to do that 丢马锁门 多此一举 lock the stable door after the horse is stolen .
白昼点灯
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。