Good-bye backward compatibility, hello structure.

告别向后兼容性，引入结构。

youdao

Hello, hello, hello, good-bye.

你好，你好，你好，再见。

youdao

Say hello , shake your hand, you are my good friend . Bye bye.

敬个礼，握握手，你是我的好朋友，再见。

youdao

Say hello , shake your hand, you are my good friend . Bye bye.

敬个礼，握握手，你是我的好朋友，再见。

youdao