他们吃完饭后英文怎么说

"他们吃完饭后"在英语中可以表达为 "After they finished eating their meal."

这个短语的来源是来自于英语中的动词短语 "finish eating," 表示吃完饭的意思。

下面是一些使用这个短语的例句：

After they finished eating their meal, they went for a walk. (他们吃完饭后，去散步了。)
I asked them if they wanted dessert, but they said they had already finished eating. (我问他们是否想吃甜点，但他们说他们已经吃饱了。)
She finished eating and then brushed her teeth. (她吃完饭后刷牙了。)