1.all-out war 全面开战

例句:Once again Europe was menaced by the threat of all-out war.
欧洲又一次面临全面战争的威胁。

2.natural rate 自然比率

例句:What's so natural about the natural rate of unemployment?
自然失业率的本质是什么？

3.central bank 中央银行

例句:The Central Bank is authorized to sell government bonds on the open market.
中央银行获授权公开发行政府债券。

4.known as 被称为

例句:China has always been known as a land of propriety and righteousness.
中国从来以礼义之邦著称。