/ˌpɒliʌnˈsætʃəreɪtɪd ||; ˌpɑlɪʌnˈsætʃəˌretɪd/adj (used about fats and oils) having the type of chemical structure that is thought to be good for your health （指脂肪及油类）多不饱和的: polyunsaturated margarine 多不饱和人造黄油 ☞Look at saturated and unsaturated. 参看saturated及unsaturated。