Sign language is a 3D language.

手语是3D立体语言。

When is a child ready for sign language?

小孩什么时候学手语好呢？

The 36-year-old man put up a sign reading "Africa Hema Village" in Chinese, English and his native language.

这位36岁的男子挂起了一个牌子，牌子上用中文、英文和他自己的母语写着“非洲盒马村”。