求翻译：1979年的石油危机和1981年飞行控制员工的罢工使航空业陷入困境，80年代初席卷美国的大萧条更是雪上加霜，很多航空公司濒于破产，1995年和1996年间，行业总体的盈利状况发生改变。是什么意思？

The oil crisis of 1979 and the 1981 strike of the flight control staff of the aviation industry in trouble, the Great Depression hit the United States in the early 1980s, even worse, a lot of airlines to the brink of bankruptcy, in 1995 and 1996, the change in the industry's overall profitability .

The 1979 oil crisis and 1981 flight control employees' strike of the aviation industry in trouble, and early 80s the Great Depression swept across the United States is compounded by many airlines, brink of insolvency, between 1995 and 1996, and the industry overall earnings have changed.

1979 petroleum crisis and in 1981 the flight control staff's strike caused the aviation industry to fall into the difficult position, at the beginning of the 80's rolled up like a mat US's the great depression one misfortune after another, the very many airline approaches the bankruptcy, in 1995 and

Oil crisis of 1979 and 1981 strikes plunged the aviation industry the plight of flight control staff, early 80, sweeping the United States great depression is worse, many airlines to the brink of bankruptcy, in 1995 and 1996, the overall profitability of industry change.

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