Estes

Determiner

  dous

2

Noun

 experimentos ilustran  como

Subordinating conjunction

  o

Determiner

  desenvolvemento

Noun

  de

Adposition

 vacinas  vai

Auxiliary

  ser

Auxiliary

  moi

Adverb

  difícil

Adjective

.

These two experiments illustrate how vaccine development is going to be very difficult.

These two experiments illustrate how vaccine development is going to be very difficult.