2. For subsistence, man has summarized many
tangible and in
tangible things in the hardships over thousands of years – culture.
为了生存,人们在几千年的艰难困苦中总结了许多有形、无形的东西——文化。
3. Tangible costs include purchase price, cost of maintenance service contracts, cost of network equipment, fixed operating costs, etc.
有形成本包括采购价、维护服务合同成本、网络设备成本和固定营运成本等;