Lunar living
月球生活
To stay fit, future Moon-dwellers will need special workouts
为保持健康，未来的月球居民需要特殊的锻炼方式
Running around the inside of a barrel might help
沿着圆桶内壁跑步可能有益处
MOTORCYCLISTS SEEKING to cement their reputation as daredevils could do worse than book a session on a Wall of Death. These are small circular velodromes where the track, instead of being lightly raked, is completely vertical. Viewed from above, the effect is of riders zooming around the inside of a washing machine.
摩托车手们若想打响自己“不怕死”的名声，可以去参加一场“死亡之墙”比赛。这种小型环形赛车场的赛道不是轻微倾斜，而是完全垂直的。从上往下看，车手们仿佛是在洗衣机的内壁上轰鸣打转。
- cement 加强，巩固（关系等）
- daredevil 鲁莽大胆的人；蛮干的人；冒失鬼
- velodrome （自行车或摩托车的）赛车场
- raked 倾斜的；置于斜坡上的.
- zoom 快速移动；迅速前往
What drives these brave souls up the wall is their speed. At around 50kph, the forces acting on them are strong enough to counterbalance gravity’s pull, and keep them pushed outward.
推动这些勇士们在墙面上飞驰的是他们的速度。在每小时50公里左右的速度下，作用在他们身上的力足以抵消重力的拉力，把他们持续压在墙面上。
