Tridane
十三烷基苯
🗣️ 情景例句
Consider the cost before you decide.
你决定前要先考虑费用问题。
Nothing so necessary for travellers as languages.
旅行者最需要的是几种语言。
One can tell the difference almost at a glance, for a spider always has eight legs and insect never more than six.
人们几乎一眼就能看出二者的差异，因为蜘蛛都是8条腿，而昆虫的腿从不超过6条。