Toxic cyanobacteria, commonly referred to as pond scum, turned the big lake fluorescent green.
有毒蓝藻，通常也被称为绿藻，使太湖整个湖体成为荧光绿色。
There was green scum over the pond.
池塘水面有绿色的浮藻。
This is a sea dragon, and the one on the bottom, the blue one, is a juvenile that has not yet swallowed the acid, has not yet taken in the brown-green algae pond scum into its body to give it energy.
这是海龙。那只在底部，蓝色的，是幼虫，尚未吞进酸，也尚未食用棕绿色的海藻浮渣到体内提供能源。
He began each trial by culturing a thick pea-green soup of algae -- the scum of a pond out of whack -- directly under the bank of noon-lights.
在每一次尝试开始的时候，他都会先培养出一份浓稠的豌豆绿色的海藻汤——重击产生的一池渣料。
He drew Honor to a halt at the edge of the moat, a deep trench lined with stone, its green waters choked by scum.
他让“荣誉”停在护城河边，一条石墙围住了深深的沟壕，绿色的河水被浮渣阻塞。