The scientists swabbed sites all over London and ended up with 600 samples of Staphylococcus bacteria.

科学家用棉签擦拭了全伦敦的上述地点，最终得到了600个葡萄球菌样本。

[Narrator] They also swabbed it all over, looking for microbial hitchhikers.

- [旁白] 他们还到处擦拭，寻找微生物搭便车者。

The scientists swabbed sites all over London and ended up with 600 samples of Staphylococcus bacteria.

科学家们对伦敦各地的地点进行了擦拭，最终获得了 600 个葡萄球菌样本。