【英语时差8,16】科学物理测验（下）

Once the ball leaves the tube it will move in a perfectly¹ straight line. What’s interesting, though, is that it wasn’t until the 17th century that this was realized to be the case. For hundreds of years people thought that some aspect of the thing that moved an object stayed in the object. That sounds a little weird², but if you thought the ball would continue in a curved path, you were subscribing³ to this theory. Curved tube, curved motion. Newton’s laws of motion stated that an object will always move in a straight line unless it is prevented from doing so. The curved tube prevents the ball from moving straight only as long as the ball is inside. Once free, however, it moves straight once again. And it will continue to do so as long as nothing interrupts this motion.

1 perfectly   

adv.完美地，无可非议地，彻底地

参考例句：

• The witnesses were each perfectly certain of what they said.证人们个个对自己所说的话十分肯定。
• Everything that we're doing is all perfectly above board.我们做的每件事情都是光明正大的。

2 weird   

adj.古怪的，离奇的；怪诞的，神秘而可怕的

参考例句：

• From his weird behaviour,he seems a bit of an oddity.从他不寻常的行为看来，他好像有点怪。
• His weird clothes really gas me.他的怪衣裳简直笑死人。

3 subscribing   

v.捐助( subscribe的现在分词 )；签署，题词；订阅；同意

参考例句：

• I am subscribing for some of the books of a book club. 我预订了几本这家书刊俱乐部出版的书。 来自辞典例句
• I am glad to have such a pleasant opportunity of subscribing myself. 今后益望努力前途，为国效力。 来自互联网