dat

• Det

  that (neuter); referring to a thing or a person further away.

• Pron
• Conj

is

• Verb

  third-person singular present indicative of zijn; is, equals

• Adv

ons

• Pron

  us (objective form of wij or we)

• Det
• Noun

gezamenlijk

1. all
2. joint, shared

streven

1. to strive [+ naar/tot (for) before a noun / + om (to/for) before a verb]
2. (slang) to study hard
3. (obsolete) to move (forward)