交卷，不明白用【idioms】做什么

行万事，须竭力；废半途，则不达

Shall always do the best, whatever you do; stop half way, you never get it.  

2. 问世间情为何物？直教人生死相许

What on earth love is, never be apart no matter life or death 

3. 始于初见，止于终老

Started at daybreak, ended in twightlight . 

All of us bear witness to the dissolution of our piece of creation. Only the novelist can restore to us, in the miracle of ink that pours itself like blood onto paper, the lineaments of our lost worlds, alive.

我们都见证了我们创造力的消散，只有小说家能为我们恢复， 利用墨在纸上产生奇迹，就像把泼出血液，

让我们失去的世界活了起来

 【Idioms】

不太明白用idioms做什么？ 是用它们造句？还是解释？