最糟糕的轰炸——包括将大块物质撞击得脱离地球形成月球巨大碰撞——已经结束了。
The worst of the bombardment—including the colossal impact that knocked loose the chunk that became our moon—was over.
一种易脱离球形燃料箱利用球类在各向受力均等，具有耐冲击的特点，制成飞行器或机动车辆的燃料箱。
A easily separable ball-shaped fuel tank is based on the the ball can be equally stressed in different direction and has high impact resistance.
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