I tried to slip up the stairs unnoticed.(我試圖神不知鬼不覺地溜上樓梯。)

Time Travel May Occur unnoticed.(時間旅行也許在不知不覺間發(fā)生。)

Unnoticed damage could lead to a fire.(沒被注意到的損壞可能造成火災。)

One force behind the import-export boom has passed all but unnoticed: the rapidly falling cost of getting goods to market.(誰也沒有注意到進出口貿(mào)易繁榮的另一個原因：商品抵達市場的運輸成本迅速下降。)

In addition to conventional galaxies, the universe contains very dim galaxies that until recently went unnoticed by astronomers.(除了傳統(tǒng)的星系，宇宙中還有一些非常暗淡的星系，直到最近才被天文學家發(fā)現(xiàn)。)

Such developments have not gone unnoticed at Amazon.com.(這樣的開發(fā)并沒有被亞馬遜公司忽略。)

But the exercises are passing off almost unnoticed.(但是軍事演習幾乎悄無聲息地進行著。)

Their deaths may go unnoticed—sometimes for years.(他們?nèi)ナ绤s多年無人察覺。)

Mr Rijsberman's warnings remained unnoticed.(MrRijsberman的警報依舊沒有引起注意。)

This bad news has not gone unnoticed.(壞消息沒逃過關注。)