英文: Beta exams – candidates can not take a beta more than once.
中文: 测试版的考试只能参加一次考试。英文: A beta ray.
中文: β射线英文: Production 1, 2 hydroxy beta 4- formic acid, a beta consignment sales produced products.
中文: 生产1、4-二羟基萘甲酸、甲萘醌,销售自产产品。英文: An overreliance on beta testing.
中文: 过分依赖β测试。英文: How are beta testers chosen?
中文: 你们怎样挑选测试者?