Most other pavements use coal tar.

大都用煤焦油。

He was attempting to manufacture quinine from aniline, an inexpensive and readily available coal tar waste product.

他试图用苯胺制造奎宁，苯胺是一种廉价且容易获得的煤焦油废料。

In 1907 a chemist combined phenol— a waste product of coal tar— and formaldehyde, creating a hardy new polymer called bakelite.

1907 年， 一位化学家将苯酚（一种煤焦油的废品）和甲醛结合在一起，创造出一种名为电木的坚固新型聚合物。

This pattern was set in 1879 when a chemist called Constantin Fahlberg was working with coal tar derivatives at Johns Hopkins University in the hope of discovering a new food preservative.

这一规律最早可追溯到 1879 年，当时一位名叫康斯坦丁·法尔贝格的化学家在约翰·霍普金斯大学研究煤焦油衍生物，希望发现一种新的食品防腐剂。

The word " spice" cleverly hid the industrial origins of saccharin and the fact that it was made from coal tar: a sticky dark liquid that is a byproduct of burning coal.

“香料” 这个词巧妙地隐藏了糖精的工业起源和它是由煤焦油制成的事实：煤焦油是一种粘稠的黑色液体，是燃煤的副产品。

A whiff of coal, tar, and tallow was borne along from the yard, but the noise and rattling in the factory was fainter than usual at that time of day.

一股煤、焦油和牛油的味道从院子里飘了出来，但工厂里的噪音和嘎嘎作响比白天的那个时候要弱。