Shortchanging
（找钱时故意）少找零头, 欺骗( shortchange的现在分词 )
🗣️ 情景例句
Don't forget to take lots of pictures.
别忘了照些照片。
Mutual understanding.
心照不宣。
If you touch them you may break something or have an accident and hurt yourselves.
如果你用手摸它们，也许你会搞坏机器，或者会发生事故，打伤你自己。