“invention”的意思是 发明，指的是创造出新的、有用的、可实现的产品或技术，从而改变人们的生活方式或世界上的某些事物。它可以是一项商品、服务或技术，也可以是一些思想、设计或过程。例如：

1. Skype is the best invention ever!

2. Curry powder is an american invention.

3. Such changes have not been seen since the invention of the printing press.

4. Fax machines were a wonderful invention at the time.

5. the invention of the telephone

希望这些例句能帮助你更好地理解“invention”这个词。