The scientist is like a high speed train: he might have a huge engine, he is (mostly) forced to follow tracks.
科学家就如同一辆高速列车：他可能有个强大的发动机，(大多数时候)他被迫循着轨道前进。
The trial was conducted at the company's Airbreathing Test Facility in Orange County, Virginia, and involved a full-scale engine tested at conditions simulating high-altitude, high-speed flight.
此次测试是在公司位于弗吉尼亚州橙郡(Orange County)的吸气式测试设施中进行的，通过模拟高海拔、高速飞行的条件下进行了全面的引擎测试。
The experimental work was carried out on a motored single cylinder test engine, using high speed simultaneous photography technique.
试验在倒拖的单缸试验机上进行，采用了同步高速摄影技术。
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