請教一些句子-歷史/建築 - 翻譯

1. Construction began immediately, and the arch was finished in a few years,
" to be consecrated in 315/316 CE on the tenth anniversary of Constantine's
rise to power."

請問" "內的這句的意思?

2.The monument is not mentioned by any ancient source, but it is clearly
identified by the inscription." The year of dedication is written on the arch
itself: "Votis X". "
句中the year of dedication是只貢獻這個monument還是指Constantine對這個戰役的
貢獻?還有，"Votis X"是什麼?

謝謝~

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