Mark Hempsell, future programs director at Reaction Engines Ltd, told CNN: 'The engine starts by burning hydrogen with air and finishes up burning hydrogen with liquid oxygen like a shuttle engine.'
This also results in quick reaction to changing search engine optimization strategies, and bringing a team of developers up to speed easily.
这同样也导致了对更改搜索引擎优化策略做出快速的反应，以及加速开发小组的开发过程。
3
The news, coming after an incident involving an engine on Rolls-Royce's test bench, rattled investors and air passengers. Yet their reaction is overblown.