柚子chatmonkey
石头shí toustone [stəʊn]; rock; petr-; petri-; petro-; -lith:搬起石头砸自己的脚 lift a stone only to drop it onto one's own feet一堆石头 a heap of stones凿石头 cut a stone被石头绊了一跤 stumble over a stone劈开一块石头 rive a stone石头是刀的朋友，障碍是意志的朋友。 Stones whet a sword, difficulties strengthen willpower.
