缓解，减轻：缓和或解除疼痛或痛苦的英文

relieve

• 缓解:    laxation; relief; ...
• 减轻:    lighten; ease; all ...
• 缓和:    relax; allay; calm ...
• 或:    nǎi-.
• 解除:    remove; relieve; g ...
• 疼痛:    pain; ache; sorene ...
• 痛苦:    pain; suffering; a ...