☆Zero in on the lesson☆
bear in mind
心に留めておく 覚えておく =to remember a fact or piece of information that is important or could be useful in the future [= keep (something) in mind]
著者がこれを書いた時、彼はまだ20歳だったということを覚えておきなさい。 Bear in mind that he is only 20 years old when he wrote this.
☆Vocabulary for the topic☆
refined
品な、洗練された、精製された =a substance that is refined has been made pure by an industrial process
chronicle
年代記、歴史 =a written record of a series of events, especially historical events, written in the order in which they happened
#a chronicle of his life during the war years(LDOCE)
transience
一時的であること、はかなさ、無常
#transience of human life 人生のはかなさ、浮世のはかなさ (英辞郎)
literary works
文学作品
LDOCEではtransientのエントリーのみ=continuing only for a short time