The optimum starting age is eight,although some children begin training at six years old. In my country we have a junior gymnastics development program for children aged from eight to ten.是什么意思_The optimum starting age is eight,although some children begin training at six years old. In my country we have a junior gymnastics development program for children aged from eight to ten.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句