on the part of
US /ɑːn ðə pɑːrt ʌv/
UK /ɑːn ðə pɑːrt ʌv/

1.
在...方面, 由...做出
done or experienced by (someone)
:
•
There was a lack of enthusiasm on the part of the students.
學生方面缺乏熱情。
•
This decision requires careful consideration on the part of management.
這項決定需要管理層進行仔細考慮。