4.
Perhaps the most extreme example of trying to squeeze too much into too little space is David Fergusson's 1946 patent 2552546.
也许最极端的压缩空间的例子是DavidFergusson于1946年获得的2552546号专利。
pī píng jiā rèn wéi , jiàn yú lú lā de zhī chí lǜ rú cǐ zhī gāo , tā suǒ néng zuò de wán quán bù jǐn jǐn shì jiě jué bā xī gēn shēn dì gù de wèn tí ér yǐ 。