并不是因为之前没有在外过过圣诞。
It's not that I have never spent Christmas away from home before.
但令人惊奇的是,Jay并没有在外面呆太久。
注意,已调优的过程就不会因为没有在外部检查先决条件而失败,因为过程体中会重复这个检查。
Note that the tuned procedure does not fail if the precondition is not checked outside, since the check is repeated in the body of the procedure.
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