Words and Phrases
foundation n．基础，根据；地基；创办；基金会
(教材P21)how it laid the foundation for future exploration
它如何为未来的勘探奠定基础
[例] Respect and friendship provide a solid foundation for marriage.
尊重和友爱是婚姻的牢固基础。
[知识拓展]
(1)lay the foundation for 为……打下基础
lay the foundation of... 奠定……的基础
(2)found vt. 建立；创办
[即学即练]——单句语法填空
①What we are learning at school will lay the foundation for the future.
②The criticisms are founded(found) on facts as well as on the convincing evidence.
frequency n．发生率，出现率；频繁；频率
(教材P26)Shock absorbers originally applied to the space shuttle launch have also been set up in the cities with a high frequency of earthquakes in order to protect buildings and save lives.
最初应用到航天飞机发射中的减震器也已安装在地震频发的城市里，以便保护建筑和挽救生命。
