a time machine150字
Jerry and Susan's father invented a time machine.They wanted to see dinosaurs in the past. So they got on the time machine and flew back to more than 65 billion years ago.At first, they saw a brontosaurus . It was huge, but it only ate plants. So they weren't afraid of it. The three enjoyed their trip there . Suddenly, there came a tyrannosaurus . This kind of dinosaur ate meat. It tied to attack Jerry, Susan and their father . They were scared. They ran to the time machine and went back quickly.
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