"sit still for" in Chinese (Simplified)
安静地坐着坐着不动
Definition
保持坐着不动，不要乱动。通常用于让某人安静下来，不要分心。
Usage Notes (Chinese (Simplified))
常用于对孩子或指令中（例如“请sit still for医生”）。正式和非正式场合都能用。'sit still' 和 'sit still for' 不完全一样，'for' 代表时间或事件（如“坐着别动五分钟”、“为照片坐着别动”）。
Examples
Can you sit still for a minute while I tie your shoes?
你能**安静地坐着**一分钟让我帮你系鞋带吗？
The children couldn't sit still for the whole movie.
孩子们在整场电影中都无法**安静地坐着**。
It's important to sit still for your school photo.
上学照相时**安静地坐着**很重要。
My toddler can't sit still for more than five seconds!
我的小宝宝连五秒都**坐不住**！
Please sit still for the nurse so she can give you your shot.
请**安静地坐着**，让护士打针。
She had to sit still for a long time during the meditation class.
她在冥想课上不得不**安静地坐着**很久。