URL：https://png.pngtree.com/png-clipart/20250104/original/pngtree-train-subway-metro-line-icon-vector-illustration-in-outline-style-png-image_18715922.png
掲載元：https://zh.pngtree.com/freepng/train-subway-metro-line-icon-vector-illustration-in-outline-style_18715922.html
