a small plastic object for cleaning between your teeth, or a piece of electrical equipment for doing the same thing

Using a flosser daily will help prevent gum disease. 每天使用牙线有助于预防牙龈疾病。

The electric flosser is the latest dental technology, performing at 10,000 strokes per minute no less. 电动洁牙器是最新的牙科技术，每分钟可以刷动不少于10000次。