波动 | bō dòng | to undulate / to fluctuate / wave motion / rise and fall | |
变动 | biàn dòng | to change / to fluctuate / change / fluctuation | |
变幻 | biàn huàn | to change irregularly / to fluctuate | |
游移不定 | yóu yí bù dìng | to oscillate without pause (idiom) / to fluctuate / (of thoughts) to wander / to waver |