立彬の日本語

彼は必要な数学の公式を完全にマスターしていた。

tbd

He had complete mastery over the necessary mathematics formula.
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必要, 必用, ひつよう
1. necessary, needed, essential, indispensable 2. necessity, need, requirement
必要的,必需的,必不可少的,不可缺少的;必要性,需要,要求
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数学, すうがく
1. mathematics
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公式, こうしき
1. official, formal 2. formula (e.g. mathematical) 3. official (social media) account (of a company, organization, etc.)
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1. indicates direct object of action 2. indicates subject of causative expression 3. indicates an area traversed 4. indicates time (period) over which action takes place 5. indicates point of departure or separation of action 6. indicates object of d...
表示动作的直接对象;表示经过的场所;表示离开或分开的点
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完全, かんぜん
1. perfect, complete
完全
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マスター, マスタ
1. to master (a skill) 2. proprietor, manager, owner, barkeeper 3. leader, chief, head 4. master (of arts, science, etc.) 5. master (recording) 6. master (device) 7. master (data)
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彼(かれ)[01]
彼, かれ
1. he, him 2. boyfriend
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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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1. indicates possessive 2. nominalizes verbs and adjectives 3. substitutes for "ga" in subordinate phrases 4. (at sentence-end, falling tone) indicates a confident conclusion 5. (at sentence-end) indicates emotional emphasis 6. (at sentence-end, risi...
句尾起强调作用;助词,表示所有关系
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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
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為る(する){していた}