It's difficult to find a window cleaner who will call regularly—they all seem to be here today and gone tomorrow.
要找一个能定期上门来擦窗户的人很难——他们似乎都是些行踪不定的人。
英语百科
Here Today and Gone Tomorrow
"Here Today and Gone Tomorrow" is a song written by Leroy "Sugarfoot" Bonner, Joe Harris, Marshall "Rock" Jones, Ralph "Pee Wee" Middlebrooks, Dutch Robinson, Clarence "Satch" Satchell, and Gary Webster of the Ohio Players' for their 1969 album Observations in Time.