shifting

Refers to sand dunes that are constantly changed by the wind; also used metaphorically for something unreliable.

变化的平衡

Often used in the context of power, influence, or opinion (e.g., shifting balance of power).

常用于权力、影响或意见的背景（例如，力量平衡的变化）。

变动的趋势

Refers to the changing direction of the sea tide; often used metaphorically for changing opinions or circumstances.

变化的趋势或观点

摇摆不定的联盟

Refers to alliances, especially political or military, that are not stable and change over time.

指不稳固且随时间变化的联盟，尤指政治或军事联盟。

Used to describe a change in loyalty, often in a political or personal context.