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changing or varying, especially continuously and between one level or thing and another การผันแปร, ความผันผวน
"What Apec must push for are ways to promote regional cooperation so that the region can reduce the of the fluctuations of currencies," Mr Abhisit said.
Ayutthaya governor Witthaya Phew-phong said the rapid fluctuation of water levels caused by the release of water from the Chao Phraya dam was a factor in the collapse of river banks in some locations.
Changing water very often makes the pH level fluctuate so that the fish are unable to adjust to the unstable environment.