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会合， かいごう
1. meeting, assembly, gathering
2. association
3. conjunction
tbd
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はず， 筈， 弭
1. should (be), bound (to be), expected (to be), must (be)
2. nock (of a bow)
3. nock (of an arrow)
4. nock-shaped grip (between thumb and forefinger)
5. wooden frame on the tip of the mast of a Japanese ship that prevents the hawser from falling out...
应该（是），必须（是）
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
