| 词汇 | sternum |
| 词根词缀 | 词源： 1667, from Gk. sternon "chest, breast, breastbone" (in Homer, only of males), from PIE *stre-to- "to stretch, extend," from a root meaning "flat surface," related to stornynai "to spread out" (see structure), on the notion of the chest as broad and flat, as opposed to the neck. |
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