出国旅行，护照是必不可少的。 出國旅行，護照是必不可少的。 出國旅行，護照是必不可少的。
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- Simplified
- 出国旅行，护照是必不可少的。
- Traditional (Taiwan)
- 出國旅行，護照是必不可少的。
- Pinyin
- Bopomofo
Written with HSK 7-9 vocabulary, at CEFR level C1.
Words in this sentence
- 出国go abroad
- 旅行travel
- 护照passport
- 是be
- 必不可少absolutely necessary
- 的used at the end of a declarative sentence for emphasis
Where this sentence is used
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