pick up on

US /pɪk ʌp ɑːn/
UK /pɪk ʌp ɑːn/
"pick up on" picture
1.

察する, 気づく

to notice or become aware of something

:
She was quick to pick up on his nervousness.
彼女は彼の緊張をすぐに察した
Did you pick up on any strange vibes from the new neighbor?
新しい隣人から何か変な雰囲気を感じ取った
2.

理解する, 習得する

to understand something after it has been explained or demonstrated

:
It took him a while to pick up on the new software.
彼が新しいソフトウェアを理解するのに時間がかかった。
The students quickly picked up on the new grammar rules.
生徒たちは新しい文法規則をすぐに理解した