disappear spontaneously meaning in English

自行缓解

Then write trace can not disappear spontaneously
书写后不会自动消失。
Floaters are mostly transient phenomenon . the amount varies with time and they often disappear spontaneously
飞蚊多是短暂的现象，它的数量会随著时间而改变，而且有机会消失。
Floaters are mostly transient phenomenon . the amount varies with time and they often disappear spontaneously
飞蚊多是短暂的现象，它的数量会随著时间而改变，而且有机会消失。
They point to the fact that many afflictions have been known to disappear spontaneously , with or without a daily dose of laughter
他们指出，事实上不论病人是否接受日剂量的笑疗，很多苦恼都会自动消失。
Auto - vanishing pen ? ? writing disappears spontaneously . erasable easily and quickly by water and eraser . can write on paper , cloth , wool , wood , plastics etc
褪色笔? ?书写后在一定时间内自动消失，也可使用专用消色笔或清水即刻消去。