1、national
国家的;全国的
Ruling parties have lost ground in national and local elections.
执政党在全国和地区选举中均败北
。major national and international issues.
国内和国际重大问题
国民的;民族的
the national characteristics and history of the country.
这个国家的民族特征和历史
Baseball is the national pastime.
棒球是全民性的休闲运动
。国民;国人
a Sri-Lankan-born British national.
出生于斯里兰卡的英国国民
2、necessary
必要的;必需的
I kept the engine running because it might be necessary to leave fast.
我没让发动机熄火,因为也许需要迅速离开
。We will do whatever is necessary to stop them.
我们要采取一切必要措施去阻止他们
。(结果或联系)必然的,势必的
Wastage was no doubt a necessary consequence of war.
巨大的损耗无疑是战争的必然结果
。Scientific work is differentiated from art by its necessary connection with the idea of progress.
科学工作与艺术的区别在于它与人类进步有着必然联系
。