Essentialness
要素\\n要点
🗣️ 情景例句
I have a new puppy and he has an excellent temperament.
我有只新的小狗，它的脾气很好。
Nothing so necessary for travellers as languages.
旅行者最需要的是几种语言。
It is not a simple competition for a fixed amount of food determined by the physical environment,
它已不是为了争得物质环境所决定的有限食物而进行的简单竞争了，