The traditional backpack with a difference ─ it's waterproof.

　　這個跟傳統(tǒng)背包不同——它防水。

　　Breathable, waterproof clothing is essential for most outdoor sports.

　　大多數(shù)戶外運動衣服必須透氣且防水。

　　The system is not 100 per cent foolproof

　　這個系統(tǒng)并非是萬無一失。

　　I spent the day working out a foolproof plan to save him.

　　我花了一天的時間想出了一個營救他的周全方案。

　　But there is also time for brief diversions onto bizarre ground, such as a discussion of the skyscraper index ( which holds that a boom in skyscraper construction is a foolproof sign of an imminent recession).

　　但也有時間去做一些奇怪的事情,比如討論摩天大樓指數(shù)（該指數(shù)認為摩天大樓建設(shè)的繁榮是經(jīng)濟衰退迫在眉睫的絕對跡象）。