help me with translation, plz

[mushou]

Hello! Can somebody help me to understand this part of phrase: "せいぜいつかの間..." ?

[community.japanese]

Mushou san,

つかのまmeans ‘moment, brief time;  brief, transient’.
せいぜいis emphasis.

Examples are
がっかりしたことに、彼の勝利は、つかの間の勝利にすぎなかった。
To my regret, his was nothing but a short-lived triumph.

つかの間の平和の後でまた戦争が起こった。 After a brief peace, war broke out again.

Yuki 　由紀
Team JapanesePod101.com

[mushou]

Yuki san, thank you very much! It was really helpful

[community.japanese]

Mushou　さん、

どういたしまして。
If you have any questions, please feel free to ask us.

Yuki 　由紀
Team JapanesePod101.com

[mushou]

どうも、由紀さん！

Indeed, occasionally I meet some words or phase that can't understand it myself.
This is a new one:

超激レア

can't find translation
If You please...

Thank you.

[community.japanese]

Mushou san,

konnichiwa.
It’s slang.
超 means ’really, very and extremely’ is often used ‘超高速 really first’ or ’超特急 really express’.
I think 激 is from 刺激 which means ‘stimulation’ or 衝撃 which means ‘shocking’.
レア is the English word ‘rare’.

Putting them together, it means ‘extremely rare thing which stimulates me’.

Yuki 　由紀
Team JapanesePod101.com