最重要的是，这套打法能迅速占领用户心智，从精神产品到拿到手的商品，全面占领。
"A lot of stately homes will have that system," says Niki Johnson, fire systems technical adviser for the UK Fire Association, a trade body, and owner of fire detection firm Derventio Fire and Security. "You could be looking at £3-4,000 just to do a corridor." Such installations require substantial pipework, he explains.
，更多细节参见51吃瓜
圖像來源，Oscar Wong/Getty Images
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