Wallace says BFS became the first PC-farm-based airfare search and pricing engine in commercial use in April 2000, although ITA had a beta site at the time.
Wallace表示，2000年4月推出的BFS是第一个面向商业应用的计算机机票搜索和定价引擎，当时的ITA只有一个测试网站。
In checking the technical conditions of farm machinery, we usually need to measure the engine output.
在检查农业机器的技术状况时，经常需要测定发动机的输出功率。
Instead of working on the family farm, young Henry went off to Detroit and became an engine-repairer.
年轻的亨利没有留在农场，承传父业，而是离家去了底特律，成为了一名发动机修理工。
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