It isn't actually known how many sites there are across Australia where rock art can be found—but unfortunately, we do know that much of the art is being lost to us.
目前还不知道在澳大利亚有多少地方能够发现这种岩石艺术；但不幸的是，我们知道有很多艺术作品正在消失。
She found many families were being exposed to high, sometimes deadly, levels of chemicals and other toxic substances, but she was not allowed to make her information public.
她发现，许多家庭都暴露在高水平的、有时是致命的化学物质和其他有毒物质中，但她不被允许公开自己的信息。
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