The museum's new exhibit explains how one planter chose to manumit his workers in 1790.

博物館的新展覽說明了一位莊園主如何在1790年選擇解放他的勞工。

Our travel guide told us the merchant manumitted every enslaved person on this estate.

我們的導遊說，那位商人解放了這座莊園裡所有被奴役的人。

The historian's email mentioned records of owners who manumitted slaves through formal court documents.

那位歷史學家在電子郵件中提到，有些奴隸主透過正式法院文件解放奴隸的紀錄。