"吃饭了请刷牙" 的英文表达是 "Please brush your teeth after eating." 来源：
这个短语是由 "eat"（吃）和 "brush"（刷牙）两个单词组成的，并在中文中表示了在吃完饭后要刷牙的意思。
一些例句：
Please brush your teeth after eating. (吃饭了请刷牙。)
Remember to brush your teeth after every meal. (记得每餐后刷牙。)
It's important to brush your teeth twice a day to maintain good oral hygiene. (每天刷牙两次对于保持好口腔卫生很重要。)