我想我们已经讨论过了这个问题，但为保险起见，我再问你一次。
I guess we've already talked about this but I'll ask you again just in case.
但你也许还想去拍张X光片，为保险起见。
You might still want to go for an X-ray, however, just to be on the safe side.
但你也许还想去拍张X光片，为保险起见。
You might still want to go for an X-ray, however, just to be on the safe side.
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