| 1. | Wood is a poor conductor of heat and electricity .
木头是热和电的不良导体。 |
| 2. | Aluminum is a good conductor of heat
铝是热的良导体。 |
| 3. | Wood is a poor conductor of heat
木头是热的不良导体。 |
| 4. | Wood is poor conductor of heat
木头的导热性很差。 |
| 5. | Metals are the best conductors and gases the poorest conductors of heat
金属是热的最佳导体，而气体则是热的最差导体。 |
| 6. | Characteristically , metals are opaque , ductile , and good conductors of heat and electricity
从特点来看，金属不透明，有韧性，是热和电的良导体。 |
| 7. | Because charcoal is a poor conductor of heat , particularly through the dead calloused skin on the bottom of your feet and especially if you scoot across the bed of coals as quickly as fire walkers are wont to do
因为木炭是热的不良导体，尤其人脚下还长了结茧的死皮，而你又像习惯走火堆的人那样飞奔过一堆木炭。 |
| 8. | It is a dozen metals in one ; now almost diamond - hard - - and again almost as soft as copper ; here brittle as glass ? there malleable1o as silver ; now welding quite readily - - again , very difficult to weld ; melting rather easily - - at other times difficult to diffuse ; usually very magnetic - - and : again almost non - magnetic ; an excellent conductor of heat and electricity - - and at times stubbornly resistant to both
铁将十多种金属特性合而为一：时而几乎坚硬如金刚石，时而又柔软如铜；此处易碎如玻璃，彼处又可展延如银；时而很容易焊接，时而又很难焊合；有时相当易熔，有时又极难扩散；通常情况下富有磁性，但有时又几乎磁性全无；本是热和电的优良导体，但有时却顽强地抗拒二者。 |
