scarce commodity meaning in English

稀缺商品

Engineers on the project say the technology is perfect for such a mission , where storage space on the flight to the planet is a scarce commodity
计画工程师表示，这种技术非常适合这类任务，因为飞往火星的太空船上，载货空间相当有限。
My brain must have gotten the idea that working time was a scarce commodity because i worked almost the entire five hours straight and got an efficiency ratio of over 90 %
我的大脑把工作时间当成了稀罕物，因为我持续工作了几乎整整5个小时且效率比超过了90 。
Reputable foreign financial institutions of international standing are a scarce commodity . they have to be lured principally by the potential for profit into establishing a presence
信誉良好的国际级海外金融机构并不多见，它们前来开展业务，主要是受到可观的利润吸引。