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大学， 大學， だいがく
1. university, college
2. former imperial university of Japan (established under the ritsuryō system for the training of government administrators)
3. the Great Learning (one of the Four Books)
tbd
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在学， ざいがく
1. attending (school, college, etc.), being enrolled, being a student
在校学习(如上学、上大学等)、注册入学、身为学生
は
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
指示句子的主题；表示与另一选项（无论是否明确提及）形成对比；表示强调
に
1. at (place, time), in, on, during
2. to (direction, state), toward, into
3. for (purpose)
4. because of (reason), for, with
5. by, from
6. as (i.e. in the role of)
7. per, in, for, a (e.g. "once a month")
8. and, in addition to
9. if, although
tbd
