どっかいりょく
reading comprehension; ability to read and understand
Noun
上級者じょうきゅうしゃが英語力えいごりょく（特とくに読解力どっかいりょく）をつけたければ、語彙ごいを増ふやすのが王道おうどうですね。
If the more advanced want to improve English ability (especially reading comprehension) increasing vocabulary is the way to go.