1、Bitumen is a sticky, black, and highly viscous liquid or semi-solid form of petroleum.
沥青是一种黏稠的、黑色的、高粘度的液体或半固体形式的石油。
2、The road was paved with a layer of bitumen to withstand heavy traffic.
这条道路铺设了一层沥青来经受重负荷的交通。