两个铁球

人们rén men相信xiāng xìn了liǎo大dà科学kē xué家jiā亚yà里lǐ士shì多duō德dé的de一句话yī jù huà：两liǎng个gè铁tiě球qíu，十shí磅bàng重chóng的de一定yī dìng比bǐ一yī磅bàng重chóng的de先xiān落地luò dì。

People believed Aristotle: of two iron balls, the ten-pound one must land before the one-pound one.

年轻nián qīng的de伽gā利lì略lüè怀疑huái yí这zhè个gè说法shuō fǎ。

Young Galileo doubted this.

他tā站zhàn在zài比bǐ萨sà斜xié塔tǎ上shàng，把bǎ两liǎng个gè重量zhòng liàng不同bù tóng的de铁tiě球qíu同时tóng shí扔rēng了liǎo下去xià qù。

From the Leaning Tower of Pisa he dropped two balls of different weights at once.

两liǎng个gè铁tiě球qíu同时tóng shí着zhuó地dì。人们rén men都dōu惊jīng呆dāi了liǎo。

They struck the ground together. Everyone was astounded.

权威quán wēi说shuō的话de huà，也yě要yào用yòng自己zì jǐ的de头脑tóu nǎo想xiǎng一yī想xiǎng。

Even an authority's words deserve a second thought in your own head.