VOA慢速英语:Sequoia and Kings Canyon: A Land of Giants

giant - n. a person or thing that is very large

trunk - n. the thick main stem of a tree

plank - n. a long, thick board that is used especially in building something

logging - n. the act of cutting down trees in an area for wood

petition - n. a written document that people sign to show that they want a person or organization to do or change something