How do you say "you're welcome" in standard Mandarin Chinese? Is there a difference between Taiwanese or Singaporean Mandarin..

 In standard Mandarin Chinese, "you're welcome" can be translated as "不客气" (bú kèqì).

In Taiwanese Mandarin, "you're welcome" can also be expressed as "唔會" (bô huē), which is derived from the Taiwanese Hokkien dialect commonly spoken in Taiwan.

In Singaporean Mandarin, the term "不客气" (bù kèqì) is also commonly used, similar to standard Mandarin Chinese.

While there may be slight variations in accent, intonation, and local expressions, the phrase "you're welcome" is generally understood across different Mandarin-speaking regions, including Taiwan and Singapore. The differences are more apparent in informal speech and local dialects rather than standard Mandarin.