Let's master example sentences and sentence structure through dictation.

Literal

Example-sentences [and-や], sentence [possessive-の] mechanism [object-を] dictation [with-で] let's-master.

ディクテーション 'dictation' as a study method. 文章の仕組み 'the structure/mechanism of sentences.' マスターする uses the loanword 'master' as a する-verb. A study-method recommendation.