根据教科书，重机枪在中等距离是相当精确的阻止武器。
According to the book, the HMG should be an accurate stopping weapon at these intermediate ranges.
还要完全用这个配速，跑一二个中等距离(10 -15英里)。
Also, do one or two moderately long runs (10-15 miles) entirely at this pace.
找一段中等距离长的盘山路进行，或者在跑步机上模拟中等距离的山坡跑。
Find a rolling course the length of a medium-distance run or use a treadmill to simulate a medium-distance hilly course.
“高速铁路将在美国扮演重要的角色，特别是在160km~800km这个中等距离内，”Holguín-Vera声称。
"High-speed rail has an important role to play in the United States, particularly for the mid-range distances of 100 to 500 miles," (160 to 800 kilometers) Holguín-Veras says.
“高速铁路将在美国扮演重要的角色，特别是在160km~800km这个中等距离内，”Holguín-Vera声称。
"High-speed rail has an important role to play in the United States, particularly for the mid-range distances of 100 to 500 miles," (160 to 800 kilometers) Holguín-Veras says.
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