depression：(心情)抑郁；(经济)萧条  

词根词缀：de-向下 + -press-压 + -ion名词词尾

• Phoenicia
• Phoenician
• phoenix
• phone
• phoneme
• phonetic
• phonetics
• phoney
• phonic
• phonics
• phono-
• phonogram
• phonograph
• phonology
• phony
• phooey
• phos-
• phosgene
• phosphate
• phosphor
• phosphorescent
• phosphorus
• phot-
• photic
• photo