The hardest parent to train means that a parent doesn't understand what your saying when you have explained it so many times.
The definition of a worst case scenario is pretty much self explanatory. A worst case scenario is the worst thing that could happen in a given situation.
the parent graph of a graph
Kris Kardashian
a train whose speed is more than that of sound
the state of being a parent
a train , a parent
The definition of a perfect parent is one who loves their child unconditionally and leads and guides them by providing them the proper skills to be contributing member of society.
A mother.
During the worst seasons of the year, which is all of them.....
pelagic environment is the worst environment in the ocean
An elevated train makes use of railway tracks that are above street level
Granville Train Disaster - 18 January 1977, Granville, New South Wales