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

les

• Article

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

• Pron

sciences

plural of science

informatiques

plural of informatique

d'abord

1. first, at first, right away
2. primarily
3. for one thing
4. Used to add annoyed emphasis, particularly to a refusal
5. immediately
6. in that case, then, if that is so

dans

• Prep

  1. in, inside (enclosed in a physical space, a group, a state)
  2. to (indicates direction towards certain large subdivisions, see usage notes)
  3. in, within (a longer period of time)
  4. during
  5. out of, from
  6. in; in the works of
  7. (colloquial) Used in dans les (“about, around”)

• Noun

institut

institute

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