JAXB still looks like a good choice for the code generation approach in the future (the beta license only allows evaluation use).
JAXB看上去将来仍是代码生成方法的一个不错选择(测试版许可证只允许评估使用)。
2
An interim landmark would be to develop and license a first-generation vaccine by 2015 with 50% protective efficacy against severe disease and death that would last longer than one year.