backbone
n.
"spine," early 14c., from back, n. + bone, n.. Figurative sense of "strength of character" is attested from 1843.
词汇 | backbone |
词根词缀 | Online Etymology Dictionary backbone n. "spine," early 14c., from back, n. + bone, n.. Figurative sense of "strength of character" is attested from 1843. |
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