The most important business was left to the last.

　　最重要的事留到最后做。

　　Crude oil is the world's most important commodity.

　　原油是世界上最重要的商品。

　　Now, just the all-important user interface is left.

　　現(xiàn)在，只剩下非常重要的用戶界面。

　　But without the all-important key, it cannot be easily deciphered.

　　但沒有所有重要的鍵，破解也并不容易。

　　Therefore, I say exercise is very essential to health.

　　因此，我才會說鍛煉對于健康是很重要的。