les

• Article

  1. plural of le: the
  2. plural of la: the

• Pron

inventeurs

plural of inventeur

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

LED

LED (light-emitting diode)

sont

third-person plural present indicative of être

obstinés

plural of obstiné

ils

1. they (male or mixed group)
2. (informal) they (female)

ont

third-person plural present indicative of avoir