For example, the air is thin and air pressure low on the mountain. It takes about twice as much effort to do outdoor tasks like clearing away snow as it would on the plains. The advantage is that the days are longer, and lung capacity is increased.
舉例來說，山上氣壓低空氣稀薄，戶外工作如冬天清除積雪時，幾乎要比平地多花上一倍力氣；而好處是日子久了，肺活量會增加。