With the largest amount of debt relative to the size of its economy among the rich countries, and a stubborn deflation problem to boot, Japan has an economic time-bomb ticking beneath it.
相对于经济总量来看，日本的债务规模是发达国家中最大的。另外，它还面临着顽固的通缩难题。
2
He was priming the bomb to go off in an hour's time.
他在事先准备炸弹在一小时后爆炸。
《柯林斯英汉双解大词典》
3
Unemployment is building up into a social timebomb across the industrialized world.