a stand-in

基本解释

As discussed earlier, it's a stand-in for the implementation-dependent construction of a subject and principals backed by a registry for our testing purposes.
正如前面所讨论的，它是主题和主体的实现相关构造的替代物，出于我们的测试目的，通过注册表为其提供支持。
The search engine has become such a stand-in repository for human knowledge that it has, among other things, compromised the entire genre of games based on trivia.
这个搜索引擎已经成为人类知识的存储库，并且比其他任何事物都影响了由细节构成的，人处理事情的风格。
It's no coincidence that the desert has been used by filmmakers as a stand-in for Mars, and by NASA to test instruments bound for the cold, dry planet.
因此电影人将其作为火星的替代物，美国航空航天局在其中测试用于在寒冷干燥的星球上的仪器就不是巧合了。

Better known as a stand-up comic, Mo'Nique has been widely praised for her role in the raw and gripping drama .
But if I join a fraternity and they pour cow poop on my head and make me stand in the rain for a month wearing pantyhose while they throw rocks at me I then think--after it I think "God, I went through a lot of stuff to get into this fraternity.
但如果我加入之前，他们要往我头上泼牛粪,要我穿着女内裤在雨中站一个月,他们还朝我扔石头,事后我就会想,”为了加入这个兄弟会我吃了不少苦头“
耶鲁公开课 - 心理学导论课程节选
"You look for a banjo, then you look for a flat top guitar, got to have the stand-up bass, a fiddle works really well, and then you get the old mandolin in because a mandolin really has got some good sound to it too."

Plastic is a stand-in for our past credit history, our current financial situation, and our remaining credit line.
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