夏天去旧金山旅游的人很多。我有一个旅游签证。旅游业创造了劳动机会。这个国家以旅游业闻名。
San Francisco is full of tourists in the summer. I have a tourist visa. Tourism creates jobs. This nation is famous for its tourism.
这是我去旧金山旅游后得出的有趣结论。
This is the fun conclusion I had while travelling to San Francisco.
是的，老实说，我去过。我去旧金山旅游过。
Yes, I have, as a matter of fact. I've traveled to San Francisco.
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