而once in a blue moon则指“难得有一次,极为罕见”,其中blue moon在口语中是“很长的一段时间,很久”的意思,如:I haven’t seen you in a blue moon.(我很久都没看见你了。)另外,如果...
" I asked. "Yes. It's time you took a greater role in the household." Power tools? Boss my baby brother? "Starting today, I want you to do the dishes on Sunday morning so y...
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