Complex sentence: When appropriately insulated from ambient heat, liquid nitrogen can be stored and transported, for example in vacuum flasks The temperature is held constant at 77 K by slow boiling of the liquid, resulting in the evolution of nitrogen gas.
Split into simpler sentences: When appropriately insulated from ambient heat, liquid nitrogen can be stored and transported, for example in vacuum flasks. Here, the very low temperature is held constant at 77 K by slow boiling of the liquid, resulting in the evolution of nitrogen gas.