However, the alternatives to PVC could likewise grow in volume in the future, making them less expensive and more competitive than they are at present.

然而，PVC的替代产品在将来也会达到大规模生产，这会让它们比现在更便宜也更有竞争性。

youdao

Animal testing is expensive and can be of dubious value, and scientists would prefer cheaper and more reliable alternatives.

动物实验成本高昂，而且不一定有价值，科学家更愿意采用便宜可靠的替代方法。

youdao

Though starch is arefined and relatively expensive starting point, his method is more efficientthan any of the alternatives that begin with plant matter. It is also a proofof principle.

尽管淀粉提纯物，耗费较高，但它比其他任何以植物为原料的方法都更高效，并且原理得到了证明。

youdao

He went on to explain that he's concerned that "mainstream" banks are leaving inner city neighborhoods, forcing residents to rely on more expensive alternatives.

NPR: Democratic Presidential Hopefuls Prepare for Debate

In Florida, for example, the state Public Service Commission (PSC) is hostile to inexpensive coal power while at the same time championing more expensive alternatives.

FORBES: The GOP Presidential Debate Highlights The Irony Of Florida Energy Policy

They are also supported by a major EU project that found developing renewable energy was no more expensive than alternatives.

FORBES: Lying With Numbers: Green Energy Edition