The making and usage of the induced flashlight bell and electrostatic demonstration box are introduced.
介绍了感应闪光铃和静电演示盒的制作和使用方法。
Don't hesitate! Ring the bell and win a box of sweets for your sweetie!
不要犹豫！打到铃铛就能为你的甜心赢得一盒糖果！
The bell was ringing. He came into the classroom with his books, the attendance book and a box of chalk. Going to the platform, he saw the bowlful of gruel on his desk.
上课铃响了，他端着书本、点名册和粉笔盆来到教室，走上讲台，忽然看见了讲桌上的那碗粥。
The bell was ringing. He came into the classroom with his books, the attendance book and a box of chalk. Going to the platform, he saw the bowlful of gruel on his desk.
上课铃响了，他端着书本、点名册和粉笔盆来到教室，走上讲台，忽然看见了讲桌上的那碗粥。
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