"한 손으로 손목시계를 차는 것은 어려워요."

Translation: Putting on a watch with one hand is difficult.

[Dracogriff]

Also of note is that 손목시계 is actually, more accurately, "wristwatch" instead of simply "watch". I don't know if "wristwatch" isn't accepted as an answer or not but that I found that good to point out

[MadisonBou2]

Yeah, it's not accepted as of now. Really weird. I went ahead and flagged it.

[elainekim2]

saying 'putting a watch on with one hand' is more colloquial and natural than 'putting on a watch with one hand'

[MadisonBou2]

"wristwatch" is not accepted, strangely. I flagged it.

[-kcdhari-]

Nah, putting on a watch with one hand is near impossible, not just difficult.

[Staffan431948]

Wristwatch is still not accepted. And 손목 literally means wrist...

[audreyqy]

Using 'the' instead of 'a' is marked wrong. Unbelievable