按字母顺序排列的职业大全提供了有助于课程选择的信息。An A to Z of careers gives helpful information about courses.生产商必须按用量多少的顺序将成分列出。Manufacturers must list ingredients in order of the amount used.将要做的事情列出来，然后决定其优先顺序。Make lists of what to do and p...
Old buses are major contributors to pollution in British cities...破旧的公交车是造成英国城市污染的主要因素。Resonance theory says that benzene can be represented by two contributors.共振论认为苯能用两个参与体表示.Large public and private companies have lon...