一项加利福尼亚州的研究发现，该州用移动电话拨打的紧急呼叫电话中，多达45%的是无谓轻率或者恶作剧。

A California study found that as many as 45 percent of the emergency calls placed from cell phones in the state were frivolous or prank calls.

youdao

当然我们不能完全排除有人恶作剧的可能性，但至少确实有些石头在移动。

And although one can't entirely rule out the possibility of some prank being played, at least some of the rocks appear to be moving under natural circumstances.

youdao

当然我们不能完全排除有人恶作剧的可能性，但至少确实有些石头在移动。

And although one can't entirely rule out the possibility of some prank being played, at least some of the rocks appear to be moving under natural circumstances.

youdao