heavy tar

• 原柏油,重质焦油,沥青

heavy tar的用法和样例：

例句

1. Shipbuilders caulk wooden boats with oakum and tar.
   造船工匠用麻丝和沥青填塞木船缝隙，使之不渗水。
2. They put tar on their feet to run in races.
   他们赛跑时会把沥青涂在脚上跑步。