Barndoor: The result of a climber getting out of balance, causing the body to swing out away from the wall like a barn door opening.是什么意思_Barndoor: The result of a climber getting out of balance, causing the body to swing out away from the wall like a barn door opening.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句