spring board造句

one-metre spring board | low board

Then, the user needs to check the automatic coil spring board, in the socket after the tightness, to just can be put into the best.

Japan possessed the strong navy through the Meiji Reform. Japan provoked the naval battle near Fengdao Island in order to cut the traditional relations between China and Korea which was a vassal state of China and attacked China by way of Korea as a spring board.