The ferry schedule changes weekly because departures depend on the tide at the harbor.

渡輪時刻表每週都會調整，因為開船時間取決於港口的潮汐。

Our cargo ship must wait for high tide before entering the port on Friday.

我們的貨輪必須等到週五漲潮後才能進港。

The hotel concierge recommended visiting the tidal caves only when the tide is out.

飯店禮賓人員建議只在退潮時去參觀海蝕洞。