nombre de

quite a few

ancêtres

plural of ancêtre

apparaissent

third-person plural present indicative/subjunctive of apparaître

donc

therefore, consequently; thus

fois

1. time (an instance or repetition of something happening)
2. times, multiplied by

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

cet

this

arbre

1. tree (plant, diagram, anything in the form of a tree)
2. axle
3. drive shaft