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時間， じかん
1. time
2. hour
3. period, class, lesson
时间的单位：小时；小时；时间，时刻
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以内， いない
1. within, inside of, less than
tbd
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
だろう， だろ
1. seems, I think, I guess, I wonder, I hope
2. right?, don't you agree?, I thought you'd say that!
似乎，我想，我猜，我不知道，我希望；对吧？你同意吗？我就知道你会这么说！