Bell protocols
[计] 贝尔协议
🧩 词语组成解析
bell
[bel]
n. 钟，铃;钟声，铃声;钟状物;[建]圆屋顶;
vt. 敲钟;系铃于，给…装上铃;使成铃状;把…放在钟形罩内;
vi. 使象钟状地张开;鸣钟;
n. 协议；礼仪礼节；条款（protocol的复数）
🗣️ 情景例句
Thank you, thank you!
谢谢 谢谢
Yes, please.
是的，麻烦了。
A moment later, the Class 4 runner fell and hurt his leg, but he quickly got up and went on running.
过了一会儿，4班的运动员摔倒了，伤了腿，但是他很快爬起来，继续往前跑。