1.From upstream to downstream, the concentrations of arsenic in both water and sediment tend to decrease gradually.
结果表明，研究区水体和沉积物中砷含量从上游到下游均呈不断降低的变化趋势，水体显示较强的自净能力。
2.The lateral pressures are initially identical to those obtained by the elastic analysis and then decrease gradually as time progresses.
研究显示，初始侧向压力与弹性分析所得结果相同，然后随著时间之增加而渐减。
3.when the relative displacement is larger than the ultimate displacement, friction resistance begins to decrease gradually.
当相对位移大于极限位移时，桩侧摩阻力随着相对位移的增大而减小。
4.The bleeding should decrease gradually and noticeably upon changing the gauze.
随着纱布的更换，出血应该逐渐明显减少。
5.And the concentrations of TP in surface water from input stream to reservoir decrease gradually.
从入库、库区至出库的表层水体中，TP的浓度逐渐降低；
6.These exercises let your heart rate increase and decrease gradually.
这些活动能让你的心率逐渐增加和降低。
7.As time goes on, the impact will decrease gradually until extinction.
随着时间的推移，这种影响将逐渐减小，直至为零。
8.To decrease gradually in size, amount, intensity, or degree
体积、数量、密度或程度的逐渐减小