并列题名：Science in 30 seconds 并列题名：Oceans in 30 seconds 并列题名：Space in 30 seconds 并列题名：Da Vinci in 30 seconds 并列题名：Ancient Rome in 30 seconds Science in 30 seconds 并列题名：Insects in 30 seconds 并列题名：Vikings in 30 seconds 并列题名：Ancient Greece in 30 seconds 并列题名：Earth in 30 seconds