słusznie

1. properly, rightly, correctly
2. justly, fairly, rightfully

mówią

third-person plural present of mówić

że

• Conj

  introduces a subordinate clause; that

• Particle

snom

dative plural of sen

wierzyć

1. to believe (to accept as true, particularly without absolute certainty) [+ w (accusative) = (in) whom/what]
2. to believe (to accept that someone is telling the truth) [+dative = whom/what], [+ w (accusative) = (in) whom/what]
3. to believe in (to have confidence in the ability or power of) [+ w (accusative) = in whom]
4. to believe in (to believe that something is right or desirable) [+ w (accusative) = in what]
5. to believe (to have religious faith; to believe in a greater truth) [+ w (accusative) = in whom/what]
6. (obsolete) to confide in; to confess

nie

• Particle

  negation particle; no, not

• Verb
• Pron

trzeba

1. expresses the goodness of the following verb; it is needed, one ought to [+infinitive]
2. expresses the naturalness or obviousness of the following verb; ought to, must [+infinitive]
3. expresses the necessity or obligation of the following verb; it is needed, one ought to [+infinitive], [+dative = for whom], [+genitive = what is needed]