撒哈拉沙漠以南的非洲大陆,很多人一天生活的开始,就是从一根小小的棍子或者树枝开始的。他们将这些细长的树枝含在嘴里,不停地咀嚼,以清洁他们的牙齿。这些从树木上砍下来的树枝,就是当地人的牙刷。很多当地人说,这种树枝牙刷比包装精美但价格不菲的护牙用品更好,因为它是天然产品、护牙有效而且价格便宜。 Sub-Saharan Africa continent, many people start their day's life, is to start from a small stick or branch. They covered these slender branches in their mouths and kept chewing to clean their teeth. The branches cut from the trees are native toothbrushes. Many locals say that this twig toothbrush is better than the well-packaged, but expensive, dental gear because it is a natural product, effective and inexpensive dental care.