1. Network that has no security is an air castle.

2. But your last quotation still seemed like air castle which made me failed to reach for.

3. But your last quot still seemed like an air castle which made me failed to reach for.

4. Understanding is the basis for the continued deepening of our exchange and cooperation. Without understanding, our relations is nothing but an air castle.

5. Short of perfect Regional Innovation System, National Innovation System will be nothing else but air castle.

6. The third in the series—“The Girl Who Kicked the Hornets’ Nest”, to us—is completely divorced from Swedish (“The air castle that exploded”).