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楽しい， 愉しい， 娯しい， たのしい

1. enjoyable, fun, pleasant, happy, delightful

高兴的，享受……乐趣的

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口笛を吹く， くちぶえをふく

1. to whistle

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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