The maintenance programme will additionally seek to keep the sites free of graffiti.

这个维护方案还会试图保护这些地点不被涂鸦。

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On Monday, the company temporarily stopped flying from the airport due to its runway maintenance programme.

BBC: Jet2 resumes flights from Belfast International Airport

On Monday, Belfast International said it would investigate Jet2's concerns, but no other airline has reported any issues with the runway maintenance programme.

BBC: Jet2 resumes flights from Belfast International Airport

The airline Jet2 has temporarily ceased flying from Belfast International Airport because of what is says are increased safety concerns during a runway maintenance programme.

BBC: A Jet2 plane