As we crossed some high bridges near the Blue Ridge Mountains on the first leg of our trip, a kind of breathlessness gripped me, a sinking, rolling sensation in the pit of my stomach.

• 上路后的第一程，就碰上了蓝脊山脉附近高悬的大桥。我简直紧张得透不过气来，心头发紧，有种人仰马翻的感觉。