We have three periods of chemistry a week.（英译中)

We have created a faculty of scholars frequently so narrow in their studies and specialized in their scholarship they are simply incapable of teaching introductory courses.（英译中)

Can you have your report ready for the press by next week？（英译中)

Which period of history are you studying？（英译中)

She has a detailed knowledge of this period.（英译中)

I have a feeling that we are being followed.（英译中)

Sunday is the first day of the week.（英译中)