atop
adv.
1650s, from a-(1) + top. Two words or hyphenated at first; not fully established as one word till late 19c.
| 词汇 | atop |
| 词根词缀 | Online Etymology Dictionary atop adv. 1650s, from a-(1) + top. Two words or hyphenated at first; not fully established as one word till late 19c. |
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