【词汇讲解】

1. gravity n. 万有引力；地心引力；重力

An apple falls down because of gravity.
由于重力的关系, 苹果往下掉。

2. adventurer n. 探险家

The adventurer recked little of the danger and hardships.
冒险者对危险和困苦毫不在意。

3. parabolic adj. 抛物线的

A surface having parabolic sections parallel to a single coordinate axis and elliptic sections perpendicular to that axis.
抛物面一种有与单坐标轴平行的抛物截面和与该轴垂直的椭圆截面的平面。

4. wardrobe n. 全部服装

My wardrobe needs to be renewed.
我需要添置一些衣服了。

5. multilayered adj. 多层的

6. weightlessness n. 无重状态

The astronauts soon got used to the condition of weightlessness.
太空人很快就习惯了失重状态。