breast·bone /ˈbrɛs(t)ˌbon/
胸骨
breast·bone /ˈbrɛs(t)ˈbon, ˌbon/ 名詞
Breast·bone n. The bone of the breast; the sternum.
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breastbone
n : the flat bone that articulates with the clavicles and the
first seven pairs of ribs [syn: sternum]