一方面，美国已有大量的焦油砂制油进口额。

On the one hand, America already imports plenty of oil from the tar sands.

youdao

去除焦油，即制得所需气体。

Get rid of the tar, namely make the gas.

youdao

去除焦油，即制得所需气体。

Get rid of the tar, namely make the gas.

youdao