The table is simply a chipboard circle on a base.

这张桌子只不过是基座加圆形刨花板。

《柯林斯英汉双解大词典》

The Food Guide Pyramid was a graphic which emphasizes that a healthy diet is built on a base of grains, vegetables and fruits, followed by ever-decreasing amounts of dairy.

食物指南金字塔是一个图表，强调健康饮食的基础是谷物、蔬菜和水果，然后是应不断减少的乳制品。

youdao

The URLs created in WebSphere Portal are based on a base URI and a numbering scheme that identifies components in the portal.

WebSphere Portal 中创建的 URL 基于基本 URI 和一个编号方案，可以识别门户内的组件。

youdao

The shell dropped and exploded above Fort Sumter, a United States military base on an island in the harbor.

VOA: special.2009.08.13

When it cuts it leaves sticky ends or un-base paired single stranded regions on each end of the part its cut and that's just a property of many restriction enzymes; not all, some cut blunt,just right down the middle.

它切割后会留下两个粘性末端,或者未配对的单链部分,这是许多限制性内切酶的特性,但不是全部,有些限制性内切酶是从中间钝切的

耶鲁公开课 - 生物医学工程探索课程节选

That was three years after the United States established a naval base at Pearl Harbor, on the island of Oahu.

VOA: special.2009.03.02

Cpl Andrew Roberts, 32, from Middlesbrough, died in a mortar attack on a base in Helmand province in May.

BBC: Family of Cpl Andrew Roberts to receive Elizabeth Cross

Oxygen could be derived from ilmanite reserves there and water could be extracted to make rocket fuel or sustain life on a base.

CNN: Mining the moon for a nuclear future

Ms. Azario offers clients a demi-couture service in which they can choose their own trims (in a block color or embroidery) on a base coat of white.

WSJ: The Battle of the Boudoir | How to Achieve Design Harmony in the Bedroom