语言简洁是一种优质语言的重要标志。间接不是省力的问题，而是象某作家说的brevity is the soul of wit. 四舍五入，英文是：4 or less, round down; otherwise round up. 这个英文表达是我所能想到的最简洁的了。 直角边平方和等于斜边平方。in a right angle triangle, the sum of the squares of the right angle sides equals the square of the hypotenuse. 天哪！ 秦地罗敷女，采桑绿水边。 素手青条上，红妆白日鲜。 蚕饥妾欲去，五马莫留连。 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." 还是美国诗人翻译的！ 内错角相等。alternate interior angles are equal. (what a mouthful!) 慎独。英文怎么表达？behave well whether alone or in company? 文责自负。one is responsible for their writing? 学然后知不足。the more you learn , the more ignorent you find youself to be . 甲乙之并集取反。add up A and B, remove the repeated elements, and take the oppostite of the result. 英语中最为简洁的要算： to be or not to be, that is a question. 生或死，这是一个抉择。 仍然是中文短小。