Analyzer
Sentence analysis
6Spans
Sentence
Span Details
この
this; last (couple of years, etc.); these; past; you (as in "you liar")-> 此のpre-noun adjective
公式
official; formal; formula; official accountno-adjective, noun, noun suffix
を
object markergrammar
頭に入れ
keep in mind; bear in mind; memorize-> 頭に入れるexpression, verb
ておい
do in preparation-> ておくgrammar
て。
connective te-formgrammar