robot 机器人
won't = will not
they'll = they will
everything 每件事物
paper 纸；纸张
fewer(few的比较级)较少的
pollution 污染
tree 树
she'll = she will
building 建筑物
astronaut 宇航员
rocket 火箭
space 太空
space station 太空站
fly 飞行
took 动词take的过去式
moon 月亮；月球
I'll = I will
fall 落下
fell 动词fall的过去式
fall in love with 爱上(某人或某物)
