The roof was covered with tar.屋顶涂抹了一层沥青.The pipe is caked with tar.烟斗里渍了很多油子.They drove across the river to New Hampshire on a hot tar road.他们沿着一条滚烫的柏油路开过了河，来到新罕布什尔州。...
Circulation is much more sluggish in the feet than in the hands.脚部的循环比手部的循环缓慢得多。the sluggish black waters of the canal运河里缓慢流动的黑乎乎的河水This humid heat makes you feel rather sluggish.这种湿热的天气使人感到懒洋洋的....