指极大的数量。与“地量”相对maximum amount

• 股市的成交量一直是涨涨跌跌，天量与地量交替。

  The volume of trades on the stock market is constantly fluctuating and alternates between highs and lows.

• 欧洲央行为市场提供的天量资金

  maximum capital provided by the European Central Bank for the market