tailing-offBNC²³⁶²¹³⁺¹ 基本例句 n.曳沙带 Variation tendency of annual runoff and amount of sand lost was identical basically, and the quantity of water and sand at Huaxian gauging station was tailing-off continuously from the1960 to 2005; 年径流量和年输沙量的变化趋势基本一致，而且自60年代至2005年华县站的水沙量持续呈递减趋势； iciba