In these modern times, almose anything is possible, nothing seems to be beyond the reach of science.
在这个现代社会里,几乎所有的事情都有可能会发生,似乎没有任何事情是科学解决不了的。
Why does aperson standing in a bus or train tend to fall when a sudden start is made?
一个人站在公共汽车或火车上,当车突然开动时,他为什么会倾倒呢?