The cost of organic conversion and lower crop yields than regular cotton (at least in the early years after a switch) have quelled farmers' interest.

有机转换的代价和有机作物比一般棉花收成低(至少在转变后的前几年)降低了农民的兴趣。

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This conversion can be done on any plant at a small fraction [20-30 percent] of the cost of building a new plant.

这种转换适用于任何核电厂，转换成本只相当于新建电厂的20%至30%。

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The Basic Service allows up to five participants in an online meeting and supports the conversion of ten documents to PDF per month. This service will cost US $14.99/month, or US $149/year.

基础版可以支持最多5人的在线会议以及支持每月10次的文档格式转化。

youdao

This means that the cost of conversion plus the cost of storage will have to be similar to the cost of providing energy on demand from the energy stored in chemical or nuclear fuels.

FORBES: Storage, Not Generation, is the Challenge to Renewable Energy

The big challenges are the high cost of a conversion plant and their technical complexity.

FORBES: Energy Forecast 2013-2014: Convert to Natural Gas

The cost of organic conversion and lower crop yields than regular cotton (at least in the early years after a switch) have quelled farmers' interest.

ECONOMIST: Ethically minded shoppers turn their focus to cotton