n. economy
misc. economical and practical
大批采购比少量购买更经济实惠。
Buying in bulk is more economical than shopping for small quantities.
《柯林斯英汉双解大词典》
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最近，一些公司已经开始计划更经济实惠的“亚轨道”飞行——在太空无际黑暗的边缘进行更短时间的冒险。
More recently, companies have begun to plan more affordable "suborbital" flights—briefer ventures just to the edge of space's vast darkness.
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