time bomb

音标发音

The tasks facing Japan are staggering. But a country does not live on a geological time bomb without some accommodation by the national psyche.
雖然日本任重道遠，但是処在這樣一個危機重重地地理位置上，日本人的國民性必然有所適應。
The bomb consists of countries that have a combination of budget deficit and borrowings relative to GDP which puts them into the category “Time Bomb” or high risk of default.
這個炸彈的入選國的債務相對於GDP都非常高，隨時都可能爆炸或主權違約。
Shortly after, a video uploaded on the Web shows a hooded man hanging in mid-air with a time bomb in plain sight. The message onscreen taunts the police to rescue the victim in time.
不久後，網路上載了一段錄影，畫麪中是一個被綁在空中的矇麪人，房內赫然放置一個計時炸彈，錄影透出信息，挑戰警方在限時內救出受害者。
entertainment.xin.msn.com

It is a ticking time bomb for the federal budget.
I don't know whether they had intelligence of recent the car bomb in Time Square.
我不知道他們最近有沒有搜集,時代廣場的汽車炸彈的情報。
普林斯頓公開課 - 國際座談會課程節選

The ticking time bomb in the American Dream is one little phrase: the pursuit of happiness.
FORBES: America's Childhood Fears
If you discard all financial implications, then Europe is a social ticking time bomb.
FORBES: Too Many Cuts, Not Enough Band Aids For The EURO

(BOMB) a bomb containing a device that makes it explode at a particular time
(DIFFICULT SITUATION) a situation that is likely to become difficult to deal with or control

A time bomb is a bomb with a mechanism that causes it to explode at a particular time.
If you describe something as a time bomb, you mean that it is likely to have a serious effect on a person or situation at a later date, especially if you think it will cause a lot of damage.