单词	back-up ring
释义	back-up ring 支承环
随便看	lighter lightfast lighthouse lighting lighting engineer lighting rig lighting-up time lightly lightness lightning lightning bug lightning conductor lightning rod lightning strike lights-out lightship lightstick lightweight lignite lignocaine likable likable, likeable like like like 肉骨头打狗，有去无回肉骨头敲鼓，荤咚咚肉骨头落了锅，啃定肉骨头落了锅，啃定了肉麻当有趣肉麻当有趣，惹厌当知己肋底下插柴，内忍肋底下插柴，自稳肋肢里扎上一指头肋肢骨里敲髓アロマテラピーアロマテラピー［aromatherapy］アロマ［aroma］アワアワアワアワアワアワアワアワシイアワイ