第229章 Lesson 33 Velcro—An Amazing Invention
- 跟美国学生同步练阅读：Smart Reading（英文原版 Grade 1-8）
- (加)韦恩·埃弗里特
- 391字
- 2017-12-29 12:36:18
One day, a Swiss inventor named George de Mestral was walking in the woods. Later, he saw that many ...
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