-----------------------------------
通う， かよう
1. to go to and from (a place), to go back and forth between, to run between (e.g. bus, train, etc.), to ply between
2. to go to (school, work, etc.), to attend, to commute, to frequent
3. to circulate (e.g. blood, electricity), to be communicated (e...
tbd
弟， おとうと， てい
1. younger brother, little brother, kid brother
2. brother-in-law (spouse's younger brother or younger sister's husband)
3. pupil, apprentice
弟弟，小弟，小兄弟；姐夫/妹夫（配偶的弟弟或妹妹的丈夫）；学生，学徒
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
