It means in english: I have one brother and one sister. J'ai (I have) un (one) frere (brother) et (and) une (one) soeur (sister)
Un is a masculine article and une is a feminine article. They both mean one, or a. Example: un chat: a cat
A fish!
it should be - une viande vieille - old meat
One God, one fatherland, one king