This is the 533rd most frequent Chinese word.
团
"团" means "group," "organization," "round," or "mass."
In this sentence, '团' stands for 'group', indicating a collective organization of people united for a purpose, such as traveling.
我们计划参加一个旅行团去上海。
We plan to join a travel group to Shanghai.
Here, '团' refers to a mass or bundle, in this case, referring to dough ('面团'), a physical lump.
她用力把面团揉均匀。
She kneaded the dough evenly with force.
In this context, '团' represents a group or team, specifically denoting the volunteer team formed by the school.