It was such a game as I had often played at home about the rocks of Black Hill Cove, but never before, you may be sure, with such a wildly beating heart as now.

我就相应地忽而向左闪，忽而向右闪。我经常在老家黑岗湾的岩石旁做这种游戏。但是，不用说，那时心可没像现在跳得这么厉害。

youdao

We're not sure if these alien rocks are radioactive, but if Kryptonite did come in art form, it'd probably resemble something like what we see below.

ENGADGET: Alt-week 8.11.12: Robo-billies, quasicrystals and radioactive art