1.tariff n.关税；价目表
Tariff barriers crimped the flow of imports.
关税障碍妨碍了进囗货的流入。
2.delicate a.微妙的；精美的；纤细的；脆弱的
The international situation is very delicate at present.
目前的国际形势极其微妙。
3.electron n.电子
Let us return to electron waves now.
现在我们再回到电子波上来。
4.revolution n.革命；变革；重大改变
Most countries have had revolutions aganist the government.
大多数国家发生过反对政府的革命。
5.panel n.嵌板；仪表盘；面板
The builders set the panel in carefully.
建筑工人把嵌板小心地镶上去。
