Incorporating organic material into chalky soils will reduce the alkalinity.在白垩质土壤中添加有机物可降低其碱性。A pH test measures the acidity or alkalinity of a substance.pH值测试可检测物质的酸碱度。As a result, soil alkalinity rose and farmland lay...
Tony emerged unscathed apart from a severely bruised finger...托尼除了一根手指严重淤青外没有受到其他伤害。Vietnam has emerged as the world's third-biggest rice exporter.越南已跃居世界第三大稻米出口国。The submarine at last emerged.那艘潜艇终于浮出了水面。Regional t...