A: The main causes globally are road traffic, falls and drowning.
2
据《每日邮报》报道，英国的格里姆伍德夫妇3年前收养了一只失足跌落烟囱的小海鸥。
The Daily Mail reported that the Grimwoods adopted a seagull three years ago after it fell down a chimney, and brought it up with three cats.
3
由于流沙饱含液体，其比重远远超过水，它使任何物体或失足跌落的任何人能够比在水中更高地浮在表面。
Since quicksand is saturated with liquid, and far outweighs water, it allows anything or anyone who steps into it, to float higher than possible in water alone.
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