coke tar

例句：

1. 1. The factory produces a lot of coke tar.
   这家工厂生产大量的焦油。
2. 2. Coal tar is used in the production of paints and varnishes.
   煤焦油用于生产油漆和清漆。
3. 3. The tar from the oil refinery was contaminated with heavy metals.
   炼油厂的焦油被重金属污染了。