Many developers use a variant of testing called test-after development (TAD), whereby you write the code and then write the unit tests.

许多开发人员使用称为后测试开发（TAD）的各种测试，你首先编写代码，然后编写单元测试。

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We might use scenarios as the unit of measure or look at each step that describes system behavior as a feature.

我们可以用场景作为我们度量的一个单元，或者将描述系统行为的每一个步骤作为一个特性。

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I use Star Festival CD-ROM as part of a unit on Japan and places in the world.

我用“七夕节“光盘作为了解,日本和世界各地的媒介。

麻省理工公开课 - 媒体、教育、市场课程节选

I don't know a unit of language which I use to communicate with you positively.

我不是主动地知道,交际用的语言单位。

耶鲁公开课 - 文学理论导论课程节选

One of these sites is the ... Right now we're doing poetry. and it mentions about the arts and the music of Japan. It inspired me to use Haiku as the focus of poetry unit.

其中有一个是……,现在我们正在学习诗歌,它提到了日本的艺术和音乐,这启发我把俳句作为诗歌单元的重点。

麻省理工公开课 - 媒体、教育、市场课程节选

The system developed in Madrid makes use of a unit comprised of three accelerometers and three gyroscopes, which keep track of the speed and direction of a vehicle at all times.

BBC: Spanish scientists develop more accurate sat-nav system

"They have little incentive to over-report use of energy, including electricity, as Beijing imposes increasingly restrictive regulations on energy use per unit of GDP on local governments, " said Bank of America Merrill-Lynch economist Lu Ting in a note.

WSJ: Some Economists Say China's Growth Has Slowed More than Data Suggest

To leverage its power, Walmart will ask its suppliers to quantify the amount of water, energy, fertilizer, and the pesticides they use, per unit of food produced.

FORBES: Walmart Flexes Its Sustainability Muscles