depressing state a fall in a thousand feet, plummeted 
Einbruch lit. tausend Zhang in einem Sturz fallen 
crollo lit. goccia mille zhang in una caduta 
effondrement lit. lâcher mille zhang en un seul automne 
caída lit. deja caer mil zhang en una caída depressing state 15 不景气 [--氣] bù jǐngqì (not-prosperous) depressing state: 经济~ economic recession || 生产~ production is slack || 生意~ business is slow ' a fall in a thousand feet, plummeted 21 一落千丈 [-] yīluò qiānzhàng (one-fall-1, 000–10 feet) a fall in a thousand feet, plummeted: 地位~ the position has plummeted || 实力~. The position has plummeted. || 心情~. The mood has plummeted. '
Chúng ta đã chứng kiến sự sụt giảm mạnh giá dầu. 
We have witnessed a sharp decline in oil prices.
Wir haben einen starken Rückgang der Ölpreise erlebt.
เราได้เห็นการลดลงของราคาน้ำมัน
我们目睹了油价的急剧下跌。