Oh. Yes. If we broke our steps … the sand itself must shift down at times.

哦。是的。如果我们打破了脚步… … 沙子本身有时必须向下移动。

Neither of them broke step: In silence both raised their left arms in a kind of salute and passed straight through, as though the dark metal was smoke.

静寂中，他们像行礼似地举起了左手，然后径直穿过了铁门，那黑色的金属仿佛只是一团 烟雾。