On the one hand, America already imports plenty of oil from the tar sands.
一方面，美国已有大量的焦油砂制油进口额。
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。
They will report on the experiments with coal tar.
他们将汇报煤焦油的试验情况。
The main objective of this paper is study on catalytic removal of tar.
本论文以生物质焦油的催化脱除为研究目的。
The main objective of this paper is study on catalytic removal of tar.
本论文以生物质焦油的催化脱除为研究目的。
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