高低潮

the tide / high and low water

surname Gao

high / tall / above average / loud / your (honorific)

height / altitude (aviation) / pitch (music) / ups and downs (success or failure) / whether sth is right or wrong / comparative strength, weight, depth, stature / (spoken interjection) anyway, whatever / eventually, in the end

low / beneath / to lower (one's head) / to let droop / to hang down / to incline

low tide / low ebb

tide / current / damp / moist / humid

tide / damp; moist; humid / fashionable; trendy / (coll.) inferior; substandard