besmarter (40)in #steemstem • 9 years agoHow do airplanes fly?Boening 747 with a common name "Jumbo yet" is the one of the most biggest jet planes in the world. He has very…besmarter (40)in #s • 9 years agoHello steemit! Some words about me/kilka słów o mnieA short introduction.../Krótki wstęp... Hello steemit! I'm Marcin and it's quite pleased that I can join to Your…
