Swamp vegetation represent the early stages of a HYDROSERE or HALOSERE.例如湖区边界、河流漫滩或者是干旱地区具有保水粘土的地段.The chloroplasts in the swamp reed were round - shaped with poorly developed grana.芦苇是一种多年生水生草本植物,其典型生境是淡水或含盐的沼泽、河边或湖边.Th...
各部门间加强配合的必要a need for greater coordination between departments这种学校的建立是与这些需要相配合的.Institution of such schools was geared to these needs.市局和太平洋总部是怎么配合的?What cooperation was there between Pacific Division and Downtown?...