利率の 30 パーセントの下落.interest rates: interest rates金利きんりto lower the rate of interest by 2 percent: to lower the rate of interest by 2 percent利子を二分方引き下げるりしをにぶがたひきさげるabnormally low interest rates: 異常{いじょう}な低金利{ていきんり}