The trails are well marked, but carrying a map is a wise precaution.

【precaution】虽然路上有清楚的标志，不过带上地图仍不失为预防万一的明智做法。

Small patches of lasting snow and ice occur on its northern slopes, but they are shallow, and present no well marked evidence of glacial motion.

它的北坡上出现了小块持久的冰雪， 但它们很浅， 没有明显的冰川运动迹象。

The peculiar flavor of the scenery has something to do with absence of evolution; it was better marked in Egypt: it was felt wherever time-sequences became interchangeable.

景物的异味与未进化有关； 它在埃及表现得更好：在时间序列可以互换的任何地方都能感觉到。

" It is, of course, an absurd idea, " said the policeman, " but if a red-hot net of wire had been laid across the back, then these better marked points would represent where the meshes crossed each other" .

“当然，这是一个荒谬的想法，”警察说，“但如果在背部铺设一张烧红的铁丝网，那么这些更好标记的点将代表网状物相互交叉的位置。”