Add punctuation: China clean energy Climate Change emission reduction green economy green jobs manufacturing renewables solar solar PV sustainable development wind wind turbine
A: China, clean energy, Climate Change, emission reduction, green economy, green jobs, manufacturing, renewables, solar, solar PV, sustainable development, wind, wind turbine

Add punctuation: He has been a top chef in 5star hotels in many international cities and on Scandinavian cruises and in his decadeslong career has worked with some of the greatest chefs including Paul Bocuse and Jol Robuchon
A: He has been a top chef in 5-star hotels in many international cities and on Scandinavian cruises, and in his decades-long career has worked with some of the greatest chefs, including Paul Bocuse and Joel Robuchon.

Add punctuation: Fast forward to present day and Python with NumPy has become a favorite tool of data scientists
A:
Fast forward to present day, and Python with NumPy has become a favorite tool of data scientists.