No. The two big tar-sands deposits are in Canada and Venezuela.

不会。两大主要的焦油沙矿位于加拿大和委内瑞拉境内。

youdao

Tar sands and biofuels represent only a small part of global energy use.

沥青砂及生物燃料仅占全球能源消耗的一小部分。

youdao

The return on sources such as tar sands and biofuels like ethanol are in the single digits.

其他如沥青砂及乙醇等生物燃料的能源回报倍数仅有个位数。

youdao

Over the past year or so, opposition to new tar-sands projects has been steadily growing.

NEWYORKER: Unconventional Crude

The Line 9 hearing comes as two other potential routes for tar-sands oil face problems.

ECONOMIST: Energy in Canada

As the plane gained altitude, I could see the vast black pits of the tar-sands mines that surround Fort McMurray.

NEWYORKER: Unconventional Crude