221.economize on (=save sth. instead of being wasteful) 节省
222.have an effect on 对……有影响
223.be in effect (=be in operation) 有效
224.go into effect 生效。(近：come into effect; take effect; be brought into effect)
225.in effect (=in fact， really) 实际上
226.give effect to (=carry out) 实行，使……生效
227.to no effect不起作用，没有取得任何效果
228.(be) of no effect (=useless) 无效
229.to the effect that大意是……，主要内容是……
230.to that effect是那个意思的……