Simplify the following text for a Grade 7 native English-speaking person.
Original: The most prominent examples of non-coding RNAs are transfer RNA ( tRNA ) and ribosomal RNA ( rRNA ) , both of which are involved in the process of translation .
Simplified: Two kinds of non-coding RNAs help in the process of building proteins in the cell . They transfer RNA ( tRNA ) and ribosomal RNA ( rRNA ) .