Contractivity
[计]收缩性
🗣️ 情景例句
In many countries, politicians are associated with money and scandals.
在许多国家，政客与金钱和丑闻分不开。
Knowledge advances by steps not by leaps.
知识的获得是循序渐进而不是突飞猛进的。
No two sorts of birds practise quite the same sort of flight;
没有任何两种鸟的飞行方式是相同的。