word of warning
一句警告的话。不要对书上所说的抠得太死。
A word of warning. Don't stick too precisely to what it says in the book.
《柯林斯英汉双解大词典》
当然，还有一句警告。
Of course, there is a caveat.
youdao
在您大刀阔斧削减用户页面的所有功能之前，必须提一句警告。
Before you go slashing all the functionality of your user pages, a word of caution is in order.
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