easy to understand
As frases da Maria são corretas e fáceis de entender.
Maria's sentences are correct and easy to understand.
Os exemplos neste dicionário são fáceis de entender.
The examples in this dictionary are easy to understand.
Quem sabe bem Toki Pona escreve frases fáceis de entender.
Toki Pona, who knows her stuff, writes sentences that are easy to understand.