safe dry land, as contrasted with water or air安全的陆地，坚实的大地（与水和空中相对而言）synonymdry land
After two days at sea, it was good to be back on terra firma again.在海上度过两天之后，又回到使人觉得坚实的陆地，真是惬意。🔊🔊
Word Originearly 17th cent. (denoting the territories on the Italian mainland which were subject to the state of Venice): from Latin, literally ‘firm land’.