sit in/on the chair,用in和on都没问题。
柯林斯英汉双解大词典 21世纪大英汉词典
sit /sɪt/ CET4 TEM4 (sitting,sat,sits)
1.V-I If you are sitting somewhere, for example, in a chair, your bottom is resting on the chair and the upper part of your body is upright. 坐
例:
Mother was sitting in her chair in the kitchen.
妈妈正坐在厨房的椅子上。
They had been sitting watching television.
他们一直坐着看电视。
2.V-I When you sit somewhere, you lower your body until you are sitting on something. (在某处) 坐下
例:
He set the cases against a wall and sat on them.
他把箱子靠在墙上,然后坐在上面。
Eva pulled over a chair and sat beside her husband.
伊娃拽过一张椅子,在她丈夫身边坐下。
你好,很高兴为你解答,答案如下:
Sitting on a chair away
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sit on a chair