知識と理解 - 未熟さ

used to describe a person who seems to be incapable of doing something due to a lack of necessary resources or skills

何かをするのに必要なスキルが欠けている人

used to say that someone is extremely bad at doing something

何かをするのがとても下手である

a person or thing that excels at doing only one thing

一つのことにしか熟練していない人

used to say that one did not have much experience with something and therefore is not very good at it

練習不足により一時的に能力が低下した人

having little knowledge or experience of a particular situation or activity

未経験者

to no longer be able to do a certain activity as well as one did in the past

何かが苦手になった人

to lack knowledge or understanding of a particular concept or term

何かについての情報がない

an unscientific or inaccurate estimate or method

空中の指