金融危机后，该国经济陷入了恶性循环。

The country's economy entered ___a ___downward ___spiral after the financial crisis.

长期失业常常会引发贫困和社会排斥的恶性循环。

Long-term unemployment can often trigger ___a ___downward ___spiral of poverty and social exclusion.

公司未能创新，导致销售额下降和裁员的恶性循环。

The company's failure to innovate led to ___a ___downward ___spiral of declining sales and layoffs.