下坂走丸

Explanation: Projectile from rolling down the hillside. Homeopathic analogy unimpeded, agile without stagnation. 　　Usage: Partial official; as object, attribute; with approval and quick to speak fluent metaphor 　　Source: Han Xun Yue "Ji Han Ji Gaozu a" Total Morrow to Yellow House Jun Zhu Ying Fan Yang wheel to make, so that the rural Hebei Chi almost greedy, the border town are happy, fraction fall from the sky, this by the (still) the following Sakamoto and take pills too. " 　　Examples: Ling good talk, each with the guests after the consultation on the aims, watching inexhaustible, such as ~ well. ★ Five Wangren Yu, "New Century Debate Tempo Heritage of taking pills"