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家中， 家じゅう， うち中， いえ中， うちじゅう， かちゅう， いえじゅう
1. whole family, entire family, all (members of) the family
2. all over the house, throughout the house
3. retainer of a daimyo, feudal domain, clan
tbd
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広がる， 拡がる， ひろがる
1. to spread (out), to extend, to stretch, to reach to, to get around, to fill (e.g. a space)
展开，扩散，延伸
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
