直立 refers to the upright position or posture of a person or object. It means standing straight without leaning or bending.
直立 (zhí lì) cheat sheet for homework
坐姿 (zuò zī): This term refers to the sitting posture or position.
弯曲 (wān qū): This term means bent or curved, describing something that is not in a straight line.
平躺 (píng tǎng): This term describes lying flat on one's back, with the body parallel to the ground.