0 the rise and fall of the sea that happens twice every day -- 潮汐；潮水
high/low tide 高／低潮
The tide is out/in. 潮退／涨了。
1 a noticeable change in a situation or increase in a particular type of behaviour -- 潮流，趋势
Yuletide 圣诞季节
Most people are completely clueless about tide directions and weather conditions.
The tide comes in very quickly here and you can soon find yourself stranded.
Is the tide coming in or going out?
On the face of it, the zone between the tides seems a poor environment for living things.
An intending swimmer is prevented from entering the sea, because (it is reasonable to suppose) this person does not realize that the tides are dangerous.
In the law of the tides, gravity is the important systematic factor, and the small unsystematic factors include variations in weather.
