英语翻译

英语翻译
It was not until 1960 that three Chinese climbers first succeeded in standing on the top of Qomolangma by climbing the north face of the mountain.
For over two months they made their way up the mountain.They faced the cold weather and strong winds with snow.Tents,sleeping bags,food—everything they used had to be carried.The temperature dropped to 40 degrees below zero.Still they struggled on,and climbed steep ice walls smooth as glass.The lack of oxygen made their breathing painful,as if they had run for miles.Each step required great efforts of body and mind.