6.a sea of sth
+of troubles, misery, sorrow无穷的…
I am distressed by the sea of misery I witness daily.我对每天所目睹的无数苦难感到难过。
+of mud, blood一大片…
Torrential rain produced a sea of mud.瓢泼大雨使得地面一片泥泞。
+of flags, faces, containers无数的…
Down below them was the sea of upturned faces.他们下面是无数张仰望的脸。