难怪他决定不参加辩论呢。Small wonder that he decided to take no part in the debate.你若不参加他们的婚礼，他们会生气的。They'll be offended if you don't go to their wedding.他专打高尔夫球,其他运动一概不参加.He plays golf to the exclusion of all other sports...
The functionalization principle and processing methods of PVC functional materials were introduced.介绍了PVC功能材料的功能化原理和加工方法.Methods: The medicine materials is decoction distill and concentrate with liquid.方法: 药材共水煎煮提取、浓缩,制成...