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北極， ほっきょく

1. North Pole 2. the Arctic

北极

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探検， 探険， たんけん

1. exploration, expedition

tbd

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出かける， 出掛ける， でかける

1. to go out (e.g. on an excursion or outing), to leave, to depart, to start, to set out 2. to be about to leave, to be just going out

外出（例如参加郊游或外出活动）、离开、启程、出发、动身；即将离开，正要出门

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彼ら， 彼等， かれら

1. they, them

tbd

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は

1. indicates sentence topic 2. indicates contrast with another option (stated or unstated) 3. adds emphasis

指示句子的主题

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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

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