Once its fuel supply runs out, each stage separates from the main part of the rocket and falls back to earth.每一级在燃料燃尽后，就会从火箭主体上脱落，落回到地球上。Inflation could fall back to single figures as early as this week.通货膨胀率最早有可能在本周就回落至个位数。They watched the kite fall back to earth.他们望着风筝落到了地上。