1. carrier
Impure drinking water can be a carrier of diseases.
You can be a hepatitis carrier and spread it to other people without even realising it.
Written words, carrier pigeons, the telegraph, and many other devices carried ideas faster and faster from man to man.
Has the letter carrier been by yet?
Anglais mot "nośnik ładunku"(carrier) se produit dans des ensembles:
Unit 17 Intermodal transport