underpinning
n.
late 15c., "action of supporting or strengthening from beneath," from under + present participle of pin, v.. Figurative sense of "prop, support" is recorded from 1580s.
| 词汇 | underpinning |
| 词根词缀 | Online Etymology Dictionary underpinning n. late 15c., "action of supporting or strengthening from beneath," from under + present participle of pin, v.. Figurative sense of "prop, support" is recorded from 1580s. |
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