红灯 (hóng dēng) — traffic red light; warning signal; red flag

뜻

예문

• 前面是红灯，请停车。
  Qián miàn shì hóng dēng, qǐng tíng chē.
  There's a red light ahead, please stop the car.
• 公司财务出现了红灯，需要立刻处理。
  Gōng sī cái wù chū xiàn le hóng dēng, xū yào lì kè chǔ lǐ.
  A red flag has appeared in the company's finances; it needs immediate attention.
• 看到红灯就要停下来，不能闯。
  Kàn dào hóng dēng jiù yào tíng xià lái, bù néng chuǎng.
  When you see a red light, you must stop and not run it.