The word “opportunity” in “opportunity cost” is actually redundant. The cost of using something is already the value of the highest-valued alternative use.

“机会”这个词在“机会成本”这个词组中实际上多余的，因为我们说到使用一个东西的成本时，就是指这个东西价值最高的其它用途的价值。

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Alternative use of improved particle swarm optimization neural network BP algorithm weight value.

利用改进粒子群算法替代BP算法优化神经网络的权值系数。

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"And,that is a very worrisome thing. The alternative,however,is even worse, which is,if we do not use them, then we definitely know that we are not going to be getting any assistance out there,"

VOA: standard.2009.08.07

It is--at least, it puts itself out there as a candidate to be an alternative term that one might use if one got tired of saying "irony" or "paradox."

如果“讽刺“，“悖论“一类的词,用的太多,可以用“朦胧“来替换“

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He said alternative use would have to be found for some of the accommodation previously filled by the youth market.

BBC: British tourists flock to enjoy the nightlife in Faliraki

Campaigners had fought moves to use the lake for dumping waste ash from Didcot power station until owners Npower found an alternative use for the ash in 2008.

BBC: New Thrupp Lake wetlands centre appeal begins

Chua told CNN that she and Tan had taken technology and processes commonly used in air conditioning and air purifying units and adapted it for an alternative use.

CNN: Ioning your way to cleaner clothes