As each small, limber student squirmed into the passage, I stepped back, afraid that my stout stature would wedge me in the tight space or that my asthma would cause me to suffocate in the tunnels.

• 看着一个个瘦弱但勇敢的学生爬进了那个洞里，我却退缩了，一来害怕自己胖胖的身体会卡在窄窄的洞里，二来怕我的哮喘发作会导致我在洞里窒息。