The choice of research field and project at this time may well be tentative, and students are free to change fields when they have gained more experience and solidified their interests.
(The choice of research field and project at this time; may well be; tentative) (students; are; free to change fields) (students; to change; fields; T:when they have gained more experience and solidified their interests) (they; have gained; more experience) (they; solidified; their interests)
The choice of research field and project at this time students students they they
may well be are to change have gained solidified
tentative
free to change fields
fields T:when they have gained more experience and solidified their interests
more experience
their interests