- A small electronic apparatus that amplifies sound and is worn in or behind the ear to compensate for impaired hearing.助听器：一种可将声音放大的小型电子装置，插入到耳中或戴于耳后以弥补受损的听力
- linear
- Linear A
- linear accelerator
- linear algebra
- Linear B
- linear combination
- linear dependence
- linear equation
- linear independence
- linearize
- linearized
- linearizes
- linearizing
- linear measure
- linear momentum
- linear perspective
- linear perspective
- lineation
- lineations
- linebacker
- line breeding
- linecaster
- line cut
- lined
- line dance