风管工程 ( Duct work )3、排气系统 ( Exhaust Air System a.一般排气工程 (General Exhaust Air System )b.
权威例句
1.
Energy prices, led by a 13% rise this year in the price of oil, have hit new post-recession highs, also driven by the global recovery, as well as the oil cartel Opec's apparent unwillingness to increase supply.
BBC: Copper enters 2011 at record high
2.
Writing my post earlier today got me thinking about the relationship between the strength of the ruble and the price of oil.