 Commerce

Buyers, Sellers, and Producers

(consumers; wholesalers, retailers; manufactures)

(raw material, work-in-process, finished-products)

(O2O, 新零售)

Phrases

on a large scale 大规模地

from a different angle 从不同角度

rely on 依靠，根据

get down to 开始做某事

in this case 在这种情况下 in case of

show up 出现 show off

figure out 想出，计算出

check out 付账，检查 help out

Abbreviations

NASA (National Aeronautics and Space Administration) （美国）国家航空航天局

    (Aeronautics & Astronautics)

FAQ (Frequently Asked Questions) 常见问题