語言簡潔是一種優質語言的重要標誌。間接不是省力的問題，而是象某作家說的brevity is the soul of wit. 四捨五入，英文是：4 or less, round down; otherwise round up. 這個英文表達是我所能想到的最簡潔的了。 直角邊平方和等於斜邊平方。in a right angle triangle, the sum of the squares of the right angle sides equals the square of the hypotenuse. 天哪！ 秦地羅敷女，採桑綠水邊。 素手青條上，紅妝白日鮮。 蠶飢妾欲去，五馬莫留連。 The lovely Lo Fo of the western land Plucks mulberry leaves by the waterside. Across the green boughs stretches out her white hand; In golden sunshine her rosy robe is dyed. "my silkworms are hungry, I cannot stay. Tarry not with your five-horse cab, I pray." 還是美國詩人翻譯的！ 內錯角相等。alternate interior angles are equal. (what a mouthful!) 慎獨。英文怎麼表達？behave well whether alone or in company? 文責自負。one is responsible for their writing? 學然後知不足。the more you learn , the more ignorent you find youself to be . 甲乙之併集取反。add up A and B, remove the repeated elements, and take the oppostite of the result. 英語中最為簡潔的要算： to be or not to be, that is a question. 生或死，這是一個抉擇。 仍然是中文短小。