But do you all know when and how it is observed in different countries?

但是，你们知道各国的儿童节是哪天吗？大家又是怎么庆祝的呢？

youdao

But do you all know when and how it is observed in different countries?

但是，你们知道各国的儿童节是哪天吗？大家又是怎么庆祝的呢？

youdao