And finally, by the sweat of their brow, by digging in and concentrating and plugging away as hard as they can muster, they manage it.是什么意思_And finally, by the sweat of their brow, by digging in and concentrating and plugging away as hard as they can muster, they manage it.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句