compulsory debt的用法和樣例：
例句
- Spreads on Italian and Greek debt over German bunds have widened sharply.
意大利和希臘債券對德國聯(lián)邦政府公債之間的利差急劇加大了。 - We need to further reduce our ratio of public debt to GDP to give us the flexibility to meet the demands of our aging population.
我們需要進(jìn)一步降低公債占國內生產(chǎn)總值的比率，亦帶來(lái)更多的靈活性，來(lái)滿(mǎn)足人口老齡化的要求。
