Two legs raise lie low up, show 90 degrees with the body, put down with the slowest rate next, can exercise abdominal muscle.是什么意思_Two legs raise lie low up, show 90 degrees with the body, put down with the slowest rate next, can exercise abdominal muscle.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句