one-off capital cost 一次过支付的非经常开支项目
One reason is cost: George Cooper, the boss of OnAir, says that at prices above $3 per minute, “demand drops off considerably”, according to the firm's research.
一个原因是费用：OnAir公司的老板乔治库珀说，根据公司的调查，“价格高于每分钟3美元，需求就会大大减少”。
The portal is therefore one of the most cost-friendly education platforms, whether on-line or off-line, to be found in the marketplace today.
因此从现有的市场情况看，无论是从线上还是线下比较，这都一个很实惠的教育平台。
The one-off cross-linked fracturing technology with variable concentrations is used, and the cost is saved a lot.
在现场应用中配套实施了变浓度一次交联压裂液施工技术，节约了施工成本。
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