Sok-tō͘
Wikipedia (chū-iû ê pek-kho-choân-su) beh kā lí kóng...
Sok-tō͘ (velocity) sī ū hong-hiòng ê sok-lu̍t, tio̍h ēng hiòng-liōng lâi pián-sī.
- Chit ia̍h tī 2012-nî 5-goe̍h 22-jἰt (Pài-jī), 12:37 ū kái--koè
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