美 [ˈkɔːstləs]
adj. 不花钱的；无须付出代价的
costing nothing
同义词： complimentary / free / gratis(p) / gratuitous
不花钱的
诉讼费(尤指判处败方偿付胜方的诉讼费用)
... 不节约 improvidence 不花钱的 costless 不著名的 obscurity ...
... costive 便秘的 costless 不须花钱的 costliness 高价 ...
...工作： 立即性（Instantaneousness） 模组和程序间必须快速连结起来，而能够快速回应不同消费者的需求 低成本（Costless） 如果必须付出成本，这些连结必须以极小的成本加诸于程序上 整合紧密（Seamless） 连结点和模组间必须能不被顾客观察出来...
None of these solutions is exactly costless.
这些解决办法并非完全不需要花钱。
The Cheap Nike shoes costless fast suit is severely an extraordinary sneaker.
快速的西装是免费的耐克运动鞋严重不寻常的。
The strategies make use of simple messages that can generate significant returns with changes that are virtually costless.
这类策略利用的都是简单的信息，能够产生相当可观的收益，而达成这种改变的成本几乎可以忽略不计。
There was a time, back in the 1950s and 1960s, when Keynesian stimulus packages were seen as costless.
Nevertheless, it would be wrong and complacent to suppose that failure would be costless.
There is a common fallacy, not least in Germany, that dropping the Greeks would be a fairly costless way to teach a useful lesson.