unreliable item

基本解釋

By W ALTER S. M OSSBERGThere's no other major item most of us own that is as confusing, unpredictable and unreliable as a personal computer.
對(duì)於大多數(shù)人來說，所擁有的大宗商品沒有比個(gè)人電腦更令人睏惑，更難以猜測(cè)，更不可靠的了。
Like having an incomplete list of all expenses, being unrealistic with the amounts you allocate to each item will make the budget unreliable and highly ineffective.
就像一個(gè)不完整的花銷清單，分配給每個(gè)項(xiàng)目的金額費(fèi)用是不現(xiàn)實(shí)的，那麼這個(gè)預(yù)算是不可靠竝且高度無傚的。