ANSWER: t There are basically two types of contracts: flat price and cost analysis.

合约基本上有两种类型：平价和成本分析。

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By unofficial estimates, the average price of a flat in the capital has risen between five and ten-fold in the past decade.

据非官方估计，在过去的十年间，首都一套公寓的平均价格已经上涨了五至十倍。

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If anything the flat price of crude could be influenced more by political implosion across producer states from correcting prices, rather than any meaningful cooperation between OPEC (Saudi) and non-OPEC (Russian) heavyweights.

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Ideal for anyone planning a short stay abroad, the new packages offer tremendous value over pay-per-use rates and help keep wireless bills predictable by giving customers a bucket of minutes for one flat price when roaming in more than 220 countries.

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Some times it is the flat out price but other times I have noticed it is the amount.

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