1. This book is a fitting tribute to the bravery of the pioneers. 本书是对先驱们大无畏精神恰如其分的献礼。
2. We were welcomed by the smiles on the faces of many young pioneers. 我们受到了许多满脸笑容的少先队员的欢迎。
3. They were thus the pioneers of mechanical engineering and served as examples and teachers to other branches of engineering. 因此，他们是机械工程的先驱者，是工程学其它分支的典范和老师。
4. When the Lumière Brothers and other pioneers began showing off this new invention, it was by no means obvious how it would be used. 当卢米埃尔兄弟和其他先驱们开始展示这项新发明时，人们根本不知道它该如何使用。
5. One of the pioneers of a radical new way of thinking about the kitchen was Catharine Esther Beecher, sister of Harriet Beecher Stowe. 凯瑟琳·埃斯特·比彻是对厨房有着激进新思考的先驱之一。她是哈里特·比彻·斯托的姐妹。
