立彬の日本語

彼はそのことに関して平然としていた。

tbd

He took it in his stride.
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その， そん， 其の
1. that, the 2. part (as in "part two") 3. um ..., er ..., uh ...
那个；部分（如“第二部分”）
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に関して， にかんして
1. regarding ..., concerning ..., about ..., on ..., with respect to ..., in regard to ...
关于……
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平然， へいぜん
1. calm, composed, cool, quiet
tbd
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彼(かれ)[01]
彼， かれ
1. he, him 2. boyfriend
他
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は
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
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事(こと){こと}
こと， 事， 縡
1. thing, matter 2. incident, occurrence, event, something serious, trouble, crisis 3. circumstances, situation, state of affairs 4. work, business, affair 5. after an inflectable word, creates a noun phrase indicating something the speaker does not ...
tbd
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為る(する){していた}