“投石”造句

投石入静水中,看到微波荡漾成圈.
Throw a stone into still water and watch the ripples spread in rings.

它会以投石运动的反作用晃动起来.
It lurches from a standstill in a reaction to the movement of the outgoing rock.

投石机: 古代投掷物体之发射器,用作发射长箭或重型球状物.
Ballista: Ancient missile launcher designed to hurl long arrows or heavy Balls.

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