英語で日本語の単語を説明してみます。
①、じっくり:三日間でこのキャンパスをじっくり見学しますで見ます。===訂正者コメント===
こんにちは。英語の添削はせず、日本語の文章だけそれらしくてみました、
①、じっくり:三日間(で)このキャンパスをじっくりで見ます。
:We look this campus carefully.
→ We will look around this campus carefully in three days.
②、留年:最近居酒屋の客足も鈍いし、せがれも留年されたし、金銭面が厳しいです。
:The bar is losing customers, and my son need to stay in the same class for another year recently,I am short of money.
→ The bar recently lost customers, and my son need to stay in the same class for another year, so I am short of money.
③、父と兄さんは交代で病院でお婆さんあばあさん(*)の看護をやるから、私たちは売れ筋の原材料の仕入れを担当します。
My father and elder brother take care of our grandmother by turns, we are in charge of purchasing materials of hot products.
→ Because my father and elder brother take care of our grandmother by turns, we are in charge of purchasing materials of hot products.
*お婆さん: old woman
あばあさん: grandmother
④、土砂降りの日に、軽食を食べながらテレビを見ながら終日を潰します。
In the heavy rainning day,we kill time of the hole day by eating snac while watching TV.
→ On the heavy rainning day, we kill time of the hole day watching TV while eating snack.
⑤今日から明日にかけて講義があります。差支えがなければ、私の好きな銘柄のビールを買ってもらいますか?
I have classes from today to tomorrow.If it's not inconvenient,could you buy my favorite brand of beer for me?
→ I have classes from today to tomorrow. If you don't not mind, could you buy me my favorite brand of beer?
It may helps.