立彬の日本語
彼らは宇宙飛行の先駆者だった。
tbd
They were pioneers of space flight.
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宇宙飛行， うちゅうひこう
1. space flight, spaceflight
tbd
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先駆者， せんくしゃ
1. pioneer, trailblazer, leader, groundbreaker, pathfinder, forerunner
tbd
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
の
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