！depression不是可數，因為depression為抽象名詞是不可數名詞，n. 抑郁，沮喪；蕭條（期），不景氣；低氣壓；凹陷，淺坑；俯角，俯視角

The Snickers bar was introduced just in time for the Depression, when families were told that candy was a cheap, nutritious way to get calories.