原级:armrest
1. Just inside the center's gates, handicapped children played checkers on boards perched on wheelchair armrests.
2. Pudong Airport recently welcomed 50 new restrooms complete with armrests and instructions for people with physical disabilities.
3. Then he stopped smiling, clutched the armrests of his seat and stared at his lap.
4. They also stipulate that every child on a school bus must wear a safety belt and seats by aisles must be equipped with armrests.