The hunter peered through the fog, trying to detect the tracks left by the wounded doe.

猎人透过雾使劲眯眼看着，试图找出受伤的母鹿留下的足迹。

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It's 1977, the Twin Towers burn behind a fog, but look careful-ly at these huge tracks in the foreground, left by ghostly bulldozers.

1977年，双塔后面烟雾弥漫，前景中依稀可辨的痕迹，是推土机所留下的梦魇。

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On a fog-shrouded evening on the penultimate day of 1906, a dead-heading train roared down this stretch of tracks near Washington's Catholic University, coming upon a slower passenger train heading the same direction on the same track.

CNN: Welcome to obscure Washington, D.C.