Pond scum
n. （浮在死水上面的）绿藻类层
🧩 词语组成解析
pond
[pɑnd]
n. 池塘;
v. 筑成池塘;
scum
[skʌm]
n. 浮渣;泡沫;糟粕;
vi. 产生泡沫;被浮渣覆盖;
vt. 将浮渣去除掉;
🗣️ 情景例句
May I speak to Miss Tan, please?
可以请谭小姐听电话吗？
I'm going skating in the Alps next month.
下个月我去阿尔卑斯山滑雪。
It is almost always due to some very special circumstances that traces of land animals survive,
几乎总是由于某些特殊的条件，陆地动物的遗体才被存下来，