3D: dangerous, difficult, dirty
3C: consumer product, communication, computer
handling and shipping fee 運費
1. pro- = many; much; in favor of
productive(adj.) making or growing things in large quantities, especially so that they can be sold
EX. During their most productive period, both mills were controlled by the Marling family.
profit(n.) money that you make by selling something or after you have paid all your business costs
(n.)[ formal ] the advantage you get from a situation
EX. No profit lay in that line of thinking.
(v.)[ formal ] to give someone an advantage
EX. I think we have reached an agreement which not only profits management but also labour.
(v.) to get an advantage from a situation
profound(adj.) very great
EX. The difference between the beginners and the intermediate class was profound.
2. sym- = together
symbol(n.) a picture or shape used to represent something
symphony(n.) a long piece of classical music played by a symphony orchestra
symposium(n.)[ formal ] a meeting where experts discuss a particular subject