Its screen is a liquid-crystal display, rather than an energy-guzzling glass cathode-ray tube — an exception to the rule that the components used are old-fashioned, and therefore cheap.
Results NS paint grew crystal in the dentine surface, occluding dentine tube.
结果NS牙面涂料在牙本质表面形成结晶，覆盖乃至堵塞牙本质小管。
3
Toothpaste tube category: USES: toothpaste can make use of various ingredients, such as ordinary toothpaste, crystal transparent toothpaste, toothpaste drugs, such as color of toothpaste.