Other changes followed: a springy arch in our foot, for example, made us more efficient walkers.

其他的变化包括：脚下的弹性足拱，使我们成为更加有效的步行者。

youdao

Diabetic foot problems are caused by changes in blood vessels and nerves that can lead to ulceration and subsequent limb amputation.

糖尿病足问题是由血管和神经的变化引起的，可导致溃烂和随后截肢。

youdao

But no humans had yet set foot in the Americas, and it needed major changes in climate before they could.

然后仍旧没有任何人类踏足到美洲的土地上，事实上只有到气候产生了重要变化之后，这种时机才能成熟。

youdao

This changes the shape of the foot and can cause swelling, tenderness and pain.

BBC: Bunions - family not footwear to blame

They are cruise veterans, having been on more than 60 voyages, but now they say they won't step foot on another ship until the industry changes.

CNN: Covering a cruise ship disaster

Udo Barckhausen, a geophysicist on board the Sonne, told CNN that the 7-meter (22-foot) buoys are programmed to detect changes in the seabed, and send alerts to the Indonesian mainland.

CNN: story.bouy.jpg