在不完全的燃烧中,一些烃燃料裂解.During incomplete combustion some of the hydrocarbon fuel is cracked.某碳氢化合物已知可能是烯烃或是烷烃.A hydrocarbon was known to be either an alkene or alkane.苯环型烃都是非经典烃, 因此,可能是芳香烃.The benzenoid hydrocarbon are all non...
an informative booklet提供资料的小册子The contents of this booklet should be of use to all students...这本小册子的内容应该会对所有的学生都有用处。The contents of this booklet should be of use to all students.这本小册子的内容应该会对所有的学生都有用处。This booklet defines...
The grief clamors once more, occupies entire pit of the stomach.伤痛再次叫嚣, 盘踞整个心窝.A great grief aggravates the heart that suffers it.巨大的悲伤使痛苦的心更加沉重.God visited everlasting grief upon her.上帝使她悲痛不已.Talk to others about your f...