名词中文翻译
中文翻译：背部拱形
同义词：
['back curve', "back curvature例句：1. The old man's back arched as he satdown.（老人坐下时背部弓起。）"]
例句：
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1. The old man's back arched as he satdown.
老人坐下时背部弓起。
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2. Thebaby's head was slightly archedover his chest.
婴儿的头微微拱在胸前。
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3. The car's suspension systemis designed to minimize back arching duringacceleration.
汽车悬挂系统设计成在加速时最小化背部拱起。