There's a very straightforward13 reason, says Amanda Lenhart, a Pew14 senior research specialist.

皮尤高级研究专家阿曼达·伦哈特指出，这种现象背后的原因其实非常简单。

youdao

There's a very straightforward13 reason, says Amanda Lenhart, a Pew14 senior research specialist.

皮尤高级研究专家阿曼达·伦哈特指出，这种现象背后的原因其实非常简单。

youdao