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As 960 km of the 1,956-km line sit at 4,000 m above sea level, it's hard to imagine how the designers and engineers tackled the challenges during the railway's construction.

Apple finished the second quarter in the fifth position. Its smartphone shipments fell 6.2 percent to 6.6 million units, while its market share was basically flat at 6.7 percent from a year earlier.

Apple Fitness+ brings studio-style workouts to iPhone, iPad, and Apple TV, intelligently incorporating workout metrics from Apple Watch for a first-of-its-kind personalized and immersive experience, the announcement said.

Around 14 percent of manufacturers and 12 percent of service firms characterized the increase as substantial, the report showed, noting "the data illustrate a considerably more widespread effect of higher input costs among service firms than in last year's survey."

Apple shares were up about 1 percent at 5.30 in trading before the bell.