(the) shifting sands of
US /ðə ˈʃɪftɪŋ sændz əv/
UK /ðə ˈʃɪftɪŋ sændz əv/

1.
變幻莫測的沙灘, 不斷變化的局面
a situation that is constantly changing and difficult to predict or control
:
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Navigating the political landscape is like dealing with the shifting sands of power.
駕馭政治格局就像應對權力變幻莫測的沙灘。
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The company struggled to adapt to the shifting sands of the market.
公司努力適應市場變幻莫測的沙灘。