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部屋， へや
1. room, chamber
2. apartment, flat, pad
3. stable
房间；公寓，套房，住所
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飛び込む， 飛びこむ， 飛込む， とびこむ
1. to jump in, to leap in, to plunge into, to dive
2. to burst in, to barge in
tbd
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
