The man in the picture has an odd little toothbrush moustache.

画里的那个人留着一道古怪的牙刷似的小胡子。

Chaplin had gotten there first with that toothbrush moustache, so how could he not make use of it?

一开头，查理就弄出了那一小撇胡子，那么为什么他不顺势利用呢？