进一退二倍投举例子简介：Su Can was sitting on the edge of his bed, with his legs crossed and his chin in his hand. He was bored to watch him doing pull-ups. He opened and opened his mouth and read: One hundred and three, one hundred and four.
Su Can was sitting on the edge of his bed, with his legs crossed and his chin in his hand. He was bored to watch him doing pull-ups. He opened and opened his mouth and read: One hundred and three, one hundred and four.
