n.弓状结构,拱架
v.(使)弯成拱形( arch的现在分词 )
"Oh really?" he said, arching an eyebrow.
“哦,真的吗?”他扬起一边的眉毛说。
I gazed up at the domed ceiling arching overhead.
我抬头凝望着上方弧形的穹顶。
And as with slumping, over - arching can also be a simple postural habit.
就像弯腰驼背, 过度挺直也可能只是一种习惯性姿势.