宋医生写到，一旦纳米颗粒进入肺细胞，就不可能再被清除出来。

It is impossible to remove nanoparticles once they penetrate lung cells, wrote Song.

youdao

宋医生写到，一旦纳米颗粒进入肺细胞，就不可能再被清除出来。

It is impossible to remove nanoparticles once they penetrate lung cells, wrote Song.

youdao