他花了五年才攻克这个难关。 他花了五年才攻克這個難關。 他花了五年才攻克這個難關。
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- Simplified
- 他花了五年才攻克这个难关。
- Traditional (Taiwan)
- 他花了五年才攻克這個難關。
- Pinyin
- Bopomofo
Written with HSK 7-9 vocabulary, at CEFR level C1.
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