1. 用高温和硫黄处理：vulcanisate /硫化产品/硫化橡胶/ | vulcanise /用高温和硫黄处理/ | vulcanism /火山现象/
1. Spent another four years, in which things went very badly with him, before he made the discovery how to vulcanise rubber completely.
固特异在发现使橡胶完全硫化的方法以前，又度过了四个艰苦的年头。
2. Goodyear spent another four years, in which things went very badly with him, before he made the discovery how to vulcanise rubber completely.
固特异在发现使橡胶完全硫化的方法以前，又度过了四个艰苦的年头。