2. Hand-foot-and-mouth disease (HFMD) is a mild, self-limiting, but highly contagious infectious disease with
spotty rash.
手足口病是一个病情温和、病程自限但具有高度传染性的发疹性感染病。
3. Variations in porosity of various batches of retainer materials and variations in bleed-out rate are contributing factors to these
spotty results.
各批保持架材料多孔性的变化和供油速度的变化是构成这些不一致结果的因素。