The ovals represent data or objects, and the rectangles represent bits of code or components.

椭圆表示数据或对象，矩形表示代码或组件的位。

youdao

Data is passed back and forth between tiers and components in the form of model objects.

数据将以模型对象的形式在层与组件之间来回传递。

youdao

Data objects are the fundamental components of SDO.

数据对象是SDO的基本组件。

youdao

Mr. MICHAEL CHERTOFF (Department of Homeland Security): The terrorists planned to carry the components of the bombs, including liquid explosive ingredients and detonating devices, disguised as beverages, electronic devices or other common objects.

NPR: It's Hard to Spot a Liquid Threat to Airline Safety

Further into the future, optical tweezers might offer a way of making objects such as computer memories whose components are but a few nanometres (billionths of a metre) across.

ECONOMIST: Male and female sperm can be sorted using lasers