il

1. he (third-person singular masculine subject pronoun for human subject)
2. it (third-person singular subject pronoun for grammatically masculine objects)
3. Impersonal subject; it

est

• Adj

  east

• Noun
• Verb

essentiellement

essentially

exprimé

past participle of exprimer

au

Contraction of à le (“to the, for the, at the”).

niveau

1. level (general)
2. level (measuring instrument)
3. level, the stage of a video game

des

• Article

  1. plural of un (“some; the plural indefinite article”)
  2. plural of une (“some; the plural indefinite article”)
  3. plural of du (“some; the plural partitive article”)
  4. plural of de la (“some; the plural partitive article”)
  5. plural of de l’ (“some; the plural partitive article”)

• Contraction

reins

plural of rein