co to znaczy In 1890 more electric and stem-powered cars were sold than those

using gasoline????

w 1890 roku sprzedano wiecej samochodow elektrycznych i parowych, niz tych na benzyne.

przetłumaczysz mi to jeszcze, proszę :) Photovoltaic cells were built as early as the 1880s, but it wasn't until Bell Labs developed silicon cells in 1954 thet solar cells could be used efficiently. Dlaczego musimy robić takie coś na Politologii??????? Kto mi powie???????