Key Points:
1. on foot 步行
2. have the pleasure of (doing) sth.
有幸（做某事），（做某事感到）荣幸
e.g. I had the pleasure of meeting your parents yesterday.
我昨天有幸遇见了你的父母。
3. scrape v. 刮,擦,穿
e.g. He scraped his boots clean before coming into the house.
他先把脚上的靴子擦干净再进屋.
. skyscraper 摩天大楼
4. the Monument to the People's Heroes 人民英雄纪念碑
5. the Great Hall of the People 人民大会堂
6. the Museum of the Chinese Revolution 中国革命博物馆
7. The Museum of Chinese History 中国历史博物馆
8. trace v. 查找,追溯
e.g. The friendly intercourse between our two countries can be traced back to the Ming Dynasty.
我们两国之间的友好往来可以追溯到明代.
9. by all means polite certainly; please do （礼）当然；完全可以。
e.g. “May I borrow your pen?”
“By all means.”
“我可以借你的钢笔吗？”
“当然可以”