立彬の日本語
昔彼らはのろしで通信していた。
tbd
Back then, people communicated using smoke signals.
312
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昔， むかし
1. the old days, the past, former times, a long time ago
2. the past ten years, the past decade
从前，很久以前；过去十年，过去的十年
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狼煙， 烽火， 狼烟， のろし， ろうえん， ほうか
1. beacon, skyrocket, signal fire, smoke signals
2. starting shot, starting signal
tbd
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通信， つうしん
1. correspondence, communication, transmission, news, signal, telecommunications
通信
彼ら， 彼等， かれら
1. they, them
tbd
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
で
1. at, in
2. at, when
3. by, with
4. within, in
5. and then, so
6. and, then
7. let me tell you, don't you know
表示范围