The two principal combustion products are water vapor and carbon dioxide.两种主要的燃烧产物是水蒸气和二氧化碳。Mars has an insubstantial atmosphere, consisting almost entirely of carbon dioxide.火星的大气层极其稀薄，几乎全部由二氧化碳构成。Carbon dioxide is a ne...
If the pressure is too low, the heating system will act up.如果压力太低, 供暖系统就会出毛病.The children always act up when their mother is out.母亲不在家,孩子们总是调皮捣蛋.The young herdsman briskly mounted a horse that was inclined to act up with...
我请求准假两周.I beg to apply for two weeks'leave of absence.在法院未予准假的情况下, 吴淑珍又一次不到庭应讯.Not leave the court, Wu Shu - chen has once again fail to appear for trial.如你目前有工作,提供你单位准假的批准信.If you are employed a letter from your wo...