尽管高端邮轮接连退出，但中国市场并未因此变得冷清。皇家加勒比的光谱号、MSC荣耀号，还有本土的爱达魔都号等，依然在运营。它们看中的是什么？
Finding these optimization opportunities can itself be a significant undertaking. It requires end-to-end understanding of the spec to identify which behaviors are observable and which can safely be elided. Even then, whether a given optimization is actually spec-compliant is often unclear. Implementers must make judgment calls about which semantics they can relax without breaking compatibility. This puts enormous pressure on runtime teams to become spec experts just to achieve acceptable performance.
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It means Everton can meet the needs of broadcasters and photographers, as well as the emergency services and security.
"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.