gumline

gumline 基本解释

n. 牙龈

词组短语

1、gumline purify 树胶提纯

gumline 用法和例句

1、Place the bristles of the brush ninety degrees to the gumline.

刷毛和牙龈缘呈90度。

2、And dental floss can go where no brush has gone before between teeth, along the gumline.

而牙线可以进到牙刷不能到达的地方牙间隙, 牙龈边沿。