Middle age man working at scientist laboratory serious face thinking about question with hand on chin, thoughtful about confusing idea
Palabras clave
chin,
face,
hand,
idea,
laboratory,
man,
question,
scientist,
serious,
thinking,
thoughtful,
working,
belief,
chemistry,
clinic,
clipboard,
concentration,
confident,
confused,
considering,
convinced,
doubt,
doubting,
experiment,
expression,
goggles,
hispanic,
laboratory,
latin,
looking,
mature,
microscope,
opinion,
pensive,
people,
professional,
reason,
reasoning,
research,
science,
success,
thinks,
thought,
2,
woman,
wonder
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