I think you meant 'clam at high tide' or the full version 'happy as a clam at high tide'. This is an idiom/expression dating from the early 19th century. The expression means to be very joyful or content.
H means high pressure and L, low pressure.
A mixed semidiurnal tide is a type of tide pattern where two high tides and two low tides occur each day, but with varying heights. This means that the high and low tides are not of equal height, creating a mix of semidiurnal (twice daily) tide characteristics.
China has a range of latitudes, spanning from about 18°N to 54°N. This means that some parts of China have a low latitude while others have a high latitude.
It means there is a temperature range of 30 degrees Fahrenheit between the high and low for the day. The high temperature is 67 degrees and the low temperature is 37 degrees.
It means, "for now, all is well." A 19th century superstition believed that if geese flew low there were evil spirits present. If they flew high, there were none at that time.
Pitch is how high or low you sing, it your singing high, it means your singing at a high pitch. And if you sing low, it means you're singing at a low pitch.
High pressure means there is going to be rain in that area. Low means the opposite.
High pressure means there is going to be rain in that area. Low means the opposite.
High interest means that the interest is high, low interest means the interest is low
It means that low pressure air is in that area. Low pressure means high temperature but sometimes storms.
The pitch of a sound refers to how high or low it is. It is determined by the frequency of the sound waves, with high frequencies corresponding to high pitches and low frequencies to low pitches.
No, that is incorrect. The term hypertension means high blood pressure. Hypotension means low blood pressure.
You get low viscosity with thin liquids like water that flow easily. Low viscosity means the liquid has low resistance. You get high resistance when you have liquids that flow slowly like honey and syrup, which means high viscosity.
No, high pitch means high frequency.
this means that she takes things to serious
high weather