What is the cost per order for this advertisement method?

即每收到一个订单所需要的广告花费为多少。

youdao

I buy three bottles of dishwashing liquid per order, or more if it's on sale.

我每次都买三瓶洗洁精，或者更多。

youdao

The business wants to reduce the cost of the process, but does not know for sure how much it costs per order.

企业希望降低流程的成本，但是无法确定每个订单的具体成本。

youdao

This means in order to do that we actually have to put 7 kilojoules per mole of energy into the reaction to make it happen.

这意味为了完成上面的反应,我们不得不往里面注入,7，千焦每摩尔的能量。

麻省理工公开课 - 化学原理课程节选

Yeah, they're different but they are roughly on the order of about 1 MJ per mole.

是的，它们是不同的但它们大致上,都是一摩尔一兆焦耳。

麻省理工公开课 - 固态化学导论课程节选

If you're trying to prevent a disease that only occurs at a rate of 20 per 100,000 people you have to give the vaccine to millions in order to see if the number goes down.

如果你尝试去防治一个,发病概率为十万分之二十人的疾病,那么就必须将疫苗分发给数百万人,以观察疫苗能否降低发病率

耶鲁公开课 - 生物医学工程探索课程节选

Even lighter-seeming pesto shrimp and avocado crostini can run 640 calories per order.

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We sell almost three tickets per order.

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Gloopy toppings, like egg salad with anchovies, or brandada de bacalao, an emulsion of salt cod and potato, can make for messy handoffs (there is only one piece per order), but a side of extra bread helps sop up spills.

NEWYORKER: Francesca