咦，不經不覺陳小姐你在做什麼？
Hey, Miss Chen, what are you doing without me noticing?

Cantonese Sentence Breakdown

咦 ji4
expression of surprise
disapproval
不經不覺 bat1 ging1 bat1 gok3
without noticing
陳 zan6
an alternative form for 陣, battle front
小姐 siu2 ze2
(noun) 1. Witness; (pronoun)
Ms; 2. Miss (before a surname)
你 nei5
you (informal, as opposed to courteous 您nín [您])
can be used to refer to an unspecified person
在 zoi6
(located) at
(to be) in
to exist
in the middle of doing sth
(indicating an action in progress)
to depend on
to rest with
to be alive
做什麼 zou6 sam6 mo1
what to do