Adaptive expectations 适应性预期
expectations based on the extrapolation of events in the recent past into the future
aggregate expenditures schedule 总支出曲线
a curve that traces out the relationship between expenditures--the sum of consumption, investment, government expenditures, and net exports--and the national income, at a fixed price level
antitrust laws 反托拉斯法
laws that discourage monopoly and restrictive practices and encourage greater competition
arbitrage 套利
the process by which assets with comparable risk, liquidity, and tax treatment are priced to yield comparable expected returns