在欧洲部分国家，奶妈佩戴蓝色的围颈带已有数百年的历史了。

Blue neckbands have been worn for centuries by nursing mothers in parts of Europe.

youdao

在欧洲部分国家，奶妈佩戴蓝色的围颈带已有数百年的历史了。

Blue neckbands have been worn for centuries by nursing mothers in parts of Europe.

youdao