If you have a complaint about your holiday, please inform us in writing.

如果你对你的假期有意见，请以书面形式告知我们。

《柯林斯英汉双解大词典》

Please inform us of any progress.

请把一切进展告诉我们。

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Please inform us when we should ship the goods.

请通知我们货物什么时候搬上船。

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