"The main message is really to maintain at less than 1.5C," said Guiot.
Steel and fibreglass, both essential components, are harder to maintain at sea, and they are expensive.
"We're trying to maintain at least a basic level of service".
Ms Wharf argued that "Chinese walls are very difficult to maintain at a lobbying business".
"That engagement with staff is vital and something that the organisation works very hard to maintain at a high level".
Professor Agrawal added that older bridges not only require more work, but become harder to maintain at a given standard.
Pakistan's leaders, they said, were working hard to maintain at least some parts of their relationship with the United States.
Thus, the controlling shareholder has to try to maintain at least the facade that the deal provides adequate compensation.
Boeing had moved some of the 3,500 other workers at the plant to the assembly line to maintain at least some helicopter production, she said.
On the latter, the present plan is for four new submarines, which the military claims is necessary to maintain at least one submarine on patrol at all times.
