。
Dr. Makino is respected by many people.
Literal
Makino Dr. [topic-は] many-[attributive-の] people [by-に] respect-[passive-されている].
A standard passive construction. 博士 ('doctor, PhD') is the academic title, used as a suffix after a name (read はかせ or はくし depending on context). 尊敬される ('be respected') is the passive of 尊敬する. に marks the agent. ~されている adds the ongoing-state sense — 'is in a state of being respected' (i.e. continues to be respected).