Well, because there's just no extra costs.

因为这么做不会产生额外的花费。

B) Considering the extra cost involved in producing the enzyme.

B）考虑到生产酶所涉及的额外成本。

These new products aren't coming at an extra cost to consumers though.

然而，这些新产品并没有增加消费者的额外成本。

The special service will come for two years at no extra cost.

这项特殊服务将免费提供两年。

I can't fund that by myself, Elizabeth said about the extra medical costs for her daughter.

仅凭我一己之力是无法负担治疗费用的，母亲在提及女儿的额外医疗费用时如是说道。

The extra cost for the average American family of four is expected to be close to $800.

平均每个美国四口之家的额外费用预计接近800美元。

It's not clear how the extra costs and lack of cinema outlets will affect Bollywood's finances.

目前尚不清楚额外的成本，以及缺乏放映的电影院将对宝莱坞的资金方面造成怎样的影响。

Capaul says the money is needed to help famers pay for extra costs linked to keeping horned animals.

阿明表示，这笔钱很有必要，可以帮助农民支付羊带角牛需要付出的额外成本。

Many mobile operators offer child-tracking at extra cost, but the number of free tracking applications is growing fast.

许多移动通信公司都提供追踪孩子的增值服务，但目前免费追踪应用程序的数量正在激增。

The actual extra cost, which we call the “green premium, ” for things like green jet fuel, is very high.

实际的额外费用（我们称为“绿色溢价”）对于绿色喷气燃料来说，是非常高的。

But Mr Mittal said the extra cost of servicing rural customers, and their low usage levels, had made things unprofitable.

但是米塔尔先生说，公司为给农村用户提供服务花了许多额外费用，而这些用户的手机使用率却很低，这两点都已令这盘生意无利可图。

OK. Now there are extra costs involved.

宽：好的。 现在涉及额外费用。

Stream subscription, you get a Nebula subscription included at zero extra cost.

Stream 订阅， 您可以零额外费用获得 Nebula 订阅。

HAAM pays for most of the extra costs through grants and fund-raising.

HAAM 通过赠款和筹款支付大部分额外费用。

Europe, meanwhile, would face tens of billions of dollars in extra costs.

与此同时，欧洲将面临数百亿美元的额外成本。

Travel insurance is included at no extra cost.

【cost】旅行保险不另收费。

There are some government subsidies out there to help pay the extra cost.

有一些政府补贴可以帮助支付额外费用。

Residents can use the gym at no extra cost.

【extra】住客不必另外付费即可使用健身房。

Moving around Africa would add 10 days of unexpected travel times and approximately 26,000$ per day of extra costs and fuel.

绕道非洲航行会增加 10 天的额外行船时间，以及每天大约 2.6 万美元的额外费用和燃料。

The problems led to building delays, extra costs and the redesign of one building to be one floor shorter, Dennis added.

丹尼斯补充说，这些问题导致了建筑延误、额外的成本以及对一栋建筑重新设计，将其减少一个楼层。