spacewalk (n), a period of time that an astronaut spends in space outside a spacecraft, experiments (n), a scientific test, gravity (n), the force that attracts objects in space towards each other, exploration (n), the act of travelling through a place in order to find out about it or look for something in it, risky (adj), involving the possibility of something bad happening, enthusiastic (adj), feeling or showing a lot of excitement and interest about somebody/something, adventurous (adj), willing to take risks and try new ideas; enjoying being in new, exciting situations.

6.3

由
打印
嵌入

排行榜

视觉风格

选项

切换模板

)
恢复自动保存：？