Their compact feet slip easily through the hardened upper crust, and they become mired in mud.

它们结实的脚很容易踩穿湖床变硬表层因而深陷泥中。

Its long toes and splayed foot design allowed it to move across the upper crust without slipping through.

它长长脚趾和脚部张开的设计，让它能在湖床表面硬壳上移动而不会滑进泥里。

Unfortunately for this sauropod, it's unaware of the mud trap that lies just beneath the cracked and dry upper crust.

这头蜥脚类恐龙很不幸，它没有注意到这个烂泥陷阱就藏在干硬开裂的表层之下。

The modern mores and misdoings of upper crust manhattan.

一些曼哈顿上层社会外表下的丑事。

They work like snowshoes, keeping the body from breaking through the upper hard crust while allowing them unimpeded movement across the lakebed.

这些脚趾如同雪地鞋使其能够在湖床上来去自如，身体不至于压穿泥地硬壳。

Almost everyone in Britain buys bread – from people in the upper crust of society to regular breadwinners who don't have much dough.

从上等阶层的人们到那些没钱却又不得不养家糊口的人，几乎每一位英国人都要买面包。

Their weight causes them to crack through the upper crust and that's when they get stuck and they're not gonna get out.

它们的重量会压碎表层硬壳而一旦被困住，它们就无法脱身。

Because the olden days had the best names for everything was key to being seen as upper crust in European society at this time.

因为当时的人们非常善于取名字，在当时的欧洲社会，这被视为上层社会的关键要素。

But say you are in fact a dirt-farming peasant, and live a life far beneath the luxuries enjoyed by the upper crusts of society.

但是说你实际上是一个土耕农，过着远低于社会上层享受的奢侈生活。

This would leave Rhodes with a sense of inferiority amid his upper crust peers  later in life, whose aristocratic families had been able to afford to send them to elite  institutions such as Eton or Winchester.

这会让罗兹在晚年的生活中在他的上流社会同辈中感到自卑，因为他们的贵族家庭有能力将他们送到伊顿公学或温彻斯特等精英院校。