Though it may be possible to measure the value of material good in terms of money, it is extremely difficult to estimate the true value of the services which people perform for us.
虽然物质产品的价值可以用金钱来衡量，但要估算别人为我们为所提供的服务的价值却是极其困难的。
The antithetic phenomenon between spirit and material, good and evil as well as brightness and darkness are embodied in different degrees in many works in the 19-20th centuries.
精神与物质、善与恶、光明与黑暗等对立现象在19 - 20世纪的许多文学作品里都有不同程度的表现。
Strong PVC based material, good wearproof and chemical erode resistant property.
坚韧的PVC 基材，高耐磨性和耐化学腐蚀性。
Strong PVC based material, good wearproof and chemical erode resistant property.
坚韧的PVC 基材，高耐磨性和耐化学腐蚀性。
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