That's why Ultra was built with a larger battery for multiday use on a single charge.

因此 Ultra 配备了更大的电池，充满一次电续航时间以天计。

Fleets of these provide multiday Nile cruises, which have become a standard part of an Egyptian tour.

这些船队提供多日尼罗河游轮，这已成为埃及旅游的标准部分。