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1. Today we can design history's and the world's safest recycling facilities, garbage dumps and facilities for burning rubbish.
    今天,我们能够设计出有史以来世界上最安全的再造设施、垃圾场和废物燃烧设备。

2. Taxis outside hotels are usually the safest, but also the most expensive for day hires.
    租用宾馆外的出租车一般最可靠,但也最昂贵。