pond scum
导读：pond scum读音音标
英 [pɔnd skʌm]美 [pɑnd skʌm]
pond scum意思解释
n.（浮在死水上面的）绿藻类层； 英英释义 pond scum n.free-floating freshwater green algae
英 [pɔnd skʌm]美 [pɑnd skʌm]
pond scum意思解释
n.（浮在死水上面的）绿藻类层； 英英释义 pond scum n.free-floating freshwater green algae
pond scum读音音标
英 [pɔnd skʌm]
美 [pɑnd skʌm]
pond scum意思解释
n.
（浮在死水上面的）绿藻类层；
英英释义
pond scumn.
free-floating freshwater green algae
