Two-part transliteration.
莎拉 = Sarah (very standard rendering).
考沃斯 phonetically maps to a surname like "Caulfield," "Kowalski," or "Cowers/Cowors":
考 for "Cau-/Ko-,"
沃 for "-wal-/-wo-,"
斯 for "-s." The middle dot separates given name from surname in Chinese transliteration of foreign names.
