Initiation is caused by radicals produced from azobisisobutyronitrile, benzoyl peroxide or perester decomposition.链引发是由偶氮二异丁腈, 过氧化苯甲酰或过氧酯分解生成的自由基所引起.Remove free radicals, relieve stresses, abate fatigue, retain skin mois...
Geologists have studied the way that heat flows from the earth.地质学家曾研究过热量如何散出地球。We need helpers of all types, engineers, scientists (e.g. geologists) and teachers.我们需要各方面的帮手：工程师、科学家（例如地质学家）和教师。By drilling, geologists can...
Dogs love splashing in mud and hippos wallow in it.狗喜欢在泥水洼里扑腾，河马则喜欢在其中打滚撒欢儿。They were more concerned about the dogs' welfare than a clean getaway.他们更加关心那些狗的安危，而非自己如何干净利落地脱身。Across the busy plaza, vendors sell hot do...