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should英 /ʃʊd/|美 /ʃʊd/
you英 /juː/|美 /ju/
解释
倒装条件句：should 提至主语 you 前、省略 if，用于正式书面语境表达条件。
Should you wish to cancel your subscription, please contact customer service at least seven days in advance.
倒装条件句：should 提至主语 you 前、省略 if，用于正式书面语境表达条件。