Erodible soil fractions are usually dislodged from projections and trapped in depression.可冲蚀土壤部分经常从凸出物剥蚀并降落于洼地.The insoluble capsule body, fast - release theophylline tablet and erodible plug were prepared , respectively...
沿着这条环行线路走一圈，河的两边都可以看到。Both sides of the river can be explored on this circular walk.这是环行铁道.It is a circular railway.月亮绕地球环行.The moon circuits round the earth....