Upperbound
上界
🗣️ 情景例句
The way people act in private is often quite different to how they act when in public.
人们私下的行为跟公共场合的行为是截然不同的。
Better wear out shoes than sheets.
宁可（经常运动）穿破鞋子，也不（因病长卧）磨破床单。
The survey revealed a large number of sources of noise that we really dislike.
这个调查显示出很大数目我们不喜欢的噪音源：