- 广(roof; broad eaves)
- 廿(twenty; many times measure)
- 又(right hand; again; once more)
Under a roof, use your hand to measure back and forth many times to get accuracy.
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escape velocity
Cosmic velocity is the minimum speed required for an object to escape the gravitational pull of a celestial body.
escape velocity
Cosmic velocity is the minimum speed required for an object to escape the gravitational pull of a celestial body.
Under a roof, use your hand to measure back and forth many times to get accuracy.
Under a roof, use your hand to measure back and forth many times to get accuracy.
escape velocity
escape velocity
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