The Montgolfier brothers began experimenting by filling small paper bags with smoke.
蒙戈兄弟俩最初的实验是把烟装进小纸袋。
The Montgolfier brothers began experimenting by filling small paper bags with smoke.
蒙戈兄弟俩最初的实验是把烟装进小纸袋。
声明:以上例句、词性分类均互联网资源自动生成,部分未经过人工审核,其表达内容亦不代表软件的观点;若发现问题,欢迎向我们指正。