When Margaret CHOU taps her foot, it 's an omen that she is about to leap upon her prey.
|( を ) と＊ぶ||
something jumps up and down.
|( が ) は＊ねる||
something bounds really far, like lice!
to jump horizontally, as in the Olympic long jump.
飛躍 躍る はずむ 飛び出す 跳躍