The double-lined arrow in the diagram is an alternative notation that shows a unit being hosted on another unit.

图表中的双行箭头是一种提示：寄主于另一个单元上的单元。

youdao

However, we also saw that separate calls to dump take away Python's ability to maintain references to objects outside of the unit being pickled.

然而，我们还看到分别调用dump会使Python无法维护对在该单元外部进行pickle的对象的引用。

youdao

The business unit being acquired includes products, technology, development engineering, marketing, sales and distribution to serve the industrial safety and automation markets.

被收购的业务部包括产品、技术、开发、工程、市场、销售和分销，以服务于工业安全及自动化市场。

youdao

To help accomplish that, General McChrystal noted that the training unit for Afghan forces is now a NATO command, rather than being just an American responsibility.

VOA: standard.2009.12.03

We talk about cells as being kind of the fundamental unit of humans and other multi-cellular organisms.

我们某种意义上把细胞视为,人体和其它多细胞生物的基本单位

耶鲁公开课 - 生物医学工程探索课程节选

Last month, the Ministry of Defence announced the closure of the regiment's Claro Barracks in 2017 with the unit being moved to a base in Catterick.

BBC: Soldiers marching through Ripon

An implementation unit is being created to examine how policies can be put into practice in government.

ECONOMIST: The Conservatives are doing well, but not well enough

The unit, being built in Bristol, is to allow young cancer patients to undergo treatment with others their own age.

BBC: Teenage cancer centre in Bristol appeals for further ?1m