Mrs Snell had taken up her position on the bottom step of the stairs.

斯内尔夫人已经占据了楼梯最底下个台阶位置。

There are spikes on the bottom of shoes used for running.

跑鞋底部有钉子。

Die centering in press is obtained by milling a slot on the bottom subplate parallel to the direction of the feed.

通过在与进料方向平行底部底板上个狭槽来实现压床上模具中心调整。

Benthos The organisms that live on the bottom sediments of freshwater and marine ecosystems. They include plants and algae (phytobenthos) that grow below low tide mark.

底栖生物（底生物）：在淡水生态系统底部生活生物体。包括些水底植物和藻类。

My wife ended up selecting a white skirt with ruffly things on the bottom and a teal blue top, both of which I liked a lot but was too smart to acknowledge.

我妻子终于选了件白色裙子，裙子底边呈波浪形，上部有个兰色鸭子图案，这两点我很喜欢，但我没有表露。