定义
a mass: 块
Force equals mass times acceleration (F = M x A). 力等于质量乘以加速度(F = M x A)。
A mass 也指一种教堂礼拜。
mass (production): 大规模（生产）
- "Do you have the equipment necessary to produce these bottles in mass?"
- "As some of you are no doubt aware, May Day, also known as International Workers' Day, is this Friday, and apparently a few thousand people will be celebrating with a mass protest on the streets of San Francisco."
- "Wang desires to make Chinese goods synonymous with quality and class, not just mass production"."
