上級者が英語力（特に読解力）をつけたければ、語彙を増やすのが王道ですね。

tbd

If the more advanced want to improve English ability (especially reading comprehension) increasing vocabulary is the way to go.

ただ、毎日だとさすがに飽きるだろう。もっと料理のバリエーションを増やさないと。

tbd

It's just if we have it every day we're bound to get fed up with it. I must increase the variety of my cooking.

このお庭の方にね。縁台を出して客席を増やしたいんです。こんな感じに。

tbd

In the garden, you know. I'd like to put out benches and increase the customer seating. Like this ...

「そうそう。せめて２階にも増やして欲しい・・・ってなんでお前がここにいる！？」「なんでって、そんなん決まってるやんか。一緒に連れションするためや」

tbd

"I know, right? The least they could do is put one on the second floor, too... Wait a mo! Why are you following me!?" "The 'why' is pretty obvious, don't you think? We're going to the bathroom together."

彼は貯金を増やした。

tbd

He added to his savings.

彼は蔵書をふやした。

tbd

He accumulated his library.

読書は語彙を増やすのに役に立つ。

tbd

Reading helps you build up your vocabulary.

読み書きが出来ないその男は自分の語彙を増やそうと一生懸命だった。

tbd

The illiterate man was eager to increase his vocabulary.

知識を増やすためにたくさん本を読まなければならない。

tbd

I must read many books to add to my knowledge.

体力を増やすように努めなさい。

tbd

Try to build up your strength.