50 learners practiced this character


The red tail fin of that goldfish is very beautiful.
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The red tail fin of that fish sways in the water, very beautiful.
A fish relies on its fins to maintain balance and change direction.
Fish use their pectoral fins to control the direction and balance of swimming.
The shark's dorsal fin emerged from the water, looking very dangerous.
The shark's dorsal fin emerged above the water, looking a bit scary.