C2 adjective, noun /ˈɡreɪtɪŋ/
grating
刺耳的声音 / 金属栅栏
Meaning
Harsh and unpleasant to the senses, especially sound; a framework of bars covering an opening.
Example
The teacher's grating voice made it hard to concentrate.
老师刺耳的声音让集中注意力变得困难。