So is high speed train travel even possible in the U. S.?
所以，高速火车在美国甚至是可能的吗？
He pitted his endurance against the other man 's speed.
他以其耐力于另一人的速度对抗。
Speed(S):the distance the crest moves forward per second.
速度（S）：每秒钟波峰移动的距离。
Let 's accelerate the speed of our community construction.
让我们加快我们社区建设的速度。
The problem is: tracks in the U. S. are not designed to support high-speed travel.
问题是：美国的铁路在设计的时候就不是为了高速运行。
Cutter is the key factor that affects TBM′s boring speed.
TBM刀具是关系TBM掘进速率的基本要素。
High Speed Rail is finally coming to the U. s.
高速铁路终于来到美国。
High Speed Rail is finally coming to the U. s.
高速铁路终于来到美国。
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