Try to translate the following into Chinese .5.But without fire,

Try to translate the following into Chinese .5.But without fire, life on earth was very difficult. Food had to be eaten raw; house could not be kept warm. Tools had to be of stone, because there was no fire for working metals.
【正确答案】：但是，没有火，人世间生活是非常困难的。食物只能生吃，房子无法保暖；工具只有石制的，因为没有火，金属无法熔炼。
【题目解析】：P280