现今的有机葡萄酒生产商一般是注重品质的小型家族企业.Today's organic wine producer is typically a small, quality-conscious family concern.有机食品是未使用人工化学制剂和杀虫剂的纯净食品。Organic food is unadulterated food produced without artificial chemicals or pest...
铜比铅的电阻要小.Copper has less resistance to electricity than lead.电阻的测量单位是欧姆。The electric resistance is measured in ohm.网路电阻超过230欧姆时，读数就完全不准了。When resistance in the circuit exceeds 230 ohms, the reading is not completely depe...