depuis

• Prep

  1. since
  2. since, ever since
  3. for ~
  4. for the last ~, over the past ~
  5. from

• Adv

découverte

• Noun

  discovery

• Adj

de

• Prep

  1. of (expresses belonging)
  2. of (used to express property or association)
  3. from (used to indicate origin)
  4. of (indicates an amount)
  5. used attributively, often translated into English as a compound word
  6. from (used to indicate the start of a time or range)
  7. used after certain verbs before an infinitive, often translated into English as a gerund or an infinitive
  8. by (indicates the amount of change)

• Article
• Noun

nombreuses

feminine plural of nombreux

améliorations

plural of amélioration

et

and

alternatives

feminine plural of alternatif

ont

third-person plural present indicative of avoir