谷底 (gǔ) — valley floor; (figurative) lowest point, nadir

뜻

예문

• 这条河从谷底流过。
  Zhè tiáo hé cóng gǔ liú guò.
  This river flows through the valley floor.
• 公司的业绩跌到了谷底。
  Gōng sī de yè jì diē dào le gǔ.
  The company's performance fell to rock bottom.
• 他的心情降到了谷底。
  Tā de xīn qíng jiàng dào le gǔ.
  His mood dropped to rock bottom.