"harvested the earth as if he were a person harvesting grapes ... threw the harvest" or "took away the people of the earth as if he were a person harvesting grapes ... threw them"
"the large winepress where God will show his wrath." A winepress is a large container in which people put grapes and then crush them to get the juice out. John is saying that the angel will take the people of the earth and put them where God will punish or destroy them because he is angry with them.