446. So precious is time that we can't afford to waste it.
时间是如此珍贵，经不起我们浪费。

六级词汇讲解:
这是一个so…that…结果状语从句的倒装句，用于强调和加强语气，正常语序应为Time is so precious that we can't afford to waste it.。“So+形容词+be+主词+that…”表示“如此……以至于……”，首先是so+形容词，然后接be动词和要形容的事物，be动词应根据语境选择恰当的形式，that引导从句，表示“以至于”的内容。 afford to意思是“负担得起，买得起”。can't afford to waste sth.意为“浪费不起某物”。

句型拓展:
So moved was she that she could not say a word.
她激动得一句话都说不出。
So loudly did he speak that even the people in the next room could hear him.
他的声音那么大，连隔壁屋子里的人都听得见。
So fast does light travel that it is difficult for us to imagine its speed.
光速如此之快，我们很难想象。