三人の児童が草で覆われた山腹を走り下りている
三人の児童が丘を走り下りている
Three children are running down a hillside covered by grass
Three children are running down hill
Three children are running down a grassy hill .
Passive;れる;動詞,接尾,*,*#Numerical;人;名詞,接尾,助数詞,*