1. perhaps from Gaulish *bitu- (compare Scottish Gaelic bith 'resin, gum') or Celtic *betu- "birch, birch resin" (compare Gaulish betulla "birch," used by Pliny for the tree supposedly the source of bitumen) + -umen from Latin ferumen 'cement, glue'.
2. -umen from Latin ferumen 'cement, glue' => cerumen, albumen.
mid-15c., from Latin bitumen "asphalt," probably, via Oscan or Umbrian, from Celtic *betu- "birch, birch resin" (compare Gaulish betulla "birch," used by Pliny for the tree supposedly the source of bitumen).
权威例句
1. a kilometre and a half of bitumen
一公里半的柏油路面
2. Bitumen paper can be burnt to gain energy.
沥青纸可以焚烧以获得能量。
3. In fact, a speciality crude is suitable only for bitumen production.
事实上, 这种特性的原油只适宜于生产沥青.
4. Tyres and Tubes, Fertilizer, Bitumen, Fuel Oil, Oil and Lubricants.
采购产品轮胎和管, 肥料, 柏油, 燃料油, 油和润滑物.
5. And they had brick for stone, and bitumen for mortar.