Flossing is the only way to remove the plaque that accumulates between the teeth and below the gum line — areas where a toothbrush can't reach and decay often begins.
牙线洁牙是去除聚集在牙齿之间和牙龈底部牙斑的唯一办法。这些地方因牙刷接触不到会发生腐蚀。
2
The influence of seriate line-source to the decay of solute concentration in streams is not simply equal to the addition influence of several point-sources.
“连续线源”对河流水体中溶质衰减过程的影响，不简单等同于几个“点源”的迭加。
3
Since results in line with expectations, it preliminarily prove that use of narrow-band FBG to realize SSB in RoF can inhibiting decay caused by dispersion better.