Relating to the tide — the way the sea rises and falls twice a day. A tidal river is one the sea pushes up into, so its water level changes; a tidal island can be walked to at low water and is cut off at high water; tidal power is electricity made from that movement.

Relating to the tide跟tide(潮汐)有關的 — the way the sea rises and falls twice a day也就是海水一天漲落兩次的現象. A tidal river is one the sea pushes up intotidal river(感潮河)是海水會往上推進的河, so its water level changes所以水位會跟著改變; a tidal island can be walked to at low watertidal island(潮汐島)在退潮時可以走過去 and is cut off at high water漲潮時就會被隔開; tidal power is electricity made from that movementtidal power(潮汐能)則是利用這個運動產生的電力

Because the tide is the clearest everyday example of something huge that comes and goes on its own schedule, people also use "tidal" for anything that arrives in a great unstoppable wave — "a tidal surge of orders".

Because the tide is the clearest everyday example of something huge that comes and goes on its own schedule因為潮汐是日常生活中最清楚的例子，說明一個龐大的東西會照著自己的規律來來去去, people also use "tidal" for anything that arrives in a great unstoppable wave人們也會用「tidal」來形容任何以巨大、擋不住的浪潮到來的事物 — "a tidal surge of orders"像「a tidal surge of orders」(訂單如潮水般湧來)

Note one important trap: "tidal wave" is the old, popular name for what scientists now call a tsunami, and a tsunami has nothing to do with tides at all; it comes from an earthquake. Scientists dislike the term for that reason, but ordinary people still say it, and "a tidal wave of criticism" is completely normal English for a flood of complaints.

Note one important trap要注意一個重要的陷阱: "tidal wave" is the old, popular name for what scientists now call a tsunami「tidal wave」是舊時的通俗說法，指的就是科學家現在說的tsunami(海嘯), and a tsunami has nothing to do with tides at all而海嘯其實跟潮汐一點關係都沒有; it comes from an earthquake它是地震引起的. Scientists dislike the term for that reason科學家因此不喜歡這個說法, but ordinary people still say it但一般人還是這樣說, and "a tidal wave of criticism" is completely normal English for a flood of complaints而「a tidal wave of criticism」用來指排山倒海的批評，是完全正常的英文說法