Last weekend,I went to the aquarium with my friends.There were many fish and othe rmarine animals in the aquarium,but the ones I most like are dolphins and sea lions.Dolphins are very smart and beautiful.They can do a lot of tricks and their performance was excellent.The sea lions are also very smart.They can do simple math and understand the command.I also saw many penguins.They are from the Antarctica.They don't fly but they are very good at swimming.I had a great time at the aquarium.
简单易懂
