针对沙漠及碎砾石覆盖下的岩石区域，目前尚无有效的钻井手段。不过，根据不同的地质条件使用不同的钻具，也能取得较好的效果。

There are no effective means currently in rocky areas covered by desert and broken gravels, but it can still obtain a good result if using different drilling tools in different geologic conditions.

youdao

针对沙漠及碎砾石覆盖下的岩石区域，目前尚无有效的钻井手段。不过，根据不同的地质条件使用不同的钻具，也能取得较好的效果。

There are no effective means currently in rocky areas covered by desert and broken gravels, but it can still obtain a good result if using different drilling tools in different geologic conditions.

youdao