1.   Otherwise the core would be sealed to prevent tampering.

2.   Treated lumber grays naturally as it weathers, and it should be sealed to prevent deterioration.

3.   Chamlong said the border was sealed to prevent hostilities from spilling on to Thai soil.

4.   He said the frontier had been sealed to prevent his escape.

5.   Tens of thousands of armed police guarded voting stations in four states where borders were sealed to prevent the entry of criminals from other states.

6.   The border has been sealed to prevent any rebel from crossing over to India, the officer said on condition of anonymity.

7.   The borders with neighboring Nepal were also sealed to prevent bogus voters or criminals from entering the state.

8.   While in transit, these outlets need to be sealed to prevent adulteration and theft.

9.   Hundreds of thousands of people were trapped as roads were sealed to prevent looting.

10.   Barriers were placed outside schools to prevent car bombs, and litter bins were sealed to prevent bombs being planted inside.