You have to drill into rocks much harder than those you normally encounter in oil fields.

你必须在岩石上打钻，而那些岩石比你通常在油田遇到的要硬得多。

youdao

The user has to drill into each method separately.

所以，用户不得不分别地展开每个方法.

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Or, they may drill into a specific book and then make a purchase.

或者，他们会深入查看具体某本书，并购买。

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Using a hollow tube, they drill into the tree and extract a 5-mm wide cylinder that shows each ring starting with the most recent, just under the bark.

VOA: standard.2010.04.05

They drill down to the shale, then go sideways and inject high-pressure water, sand or other material into the rock.

VOA: special.2009.10.23

Since cosmic radiation alters surface composition, Curiosity can drill into rock to extract pristine material from below.

CNN: Curiosity opening Martian frontier?

Curiosity's robot arm will drill into the Martian rocks and feed the powdered samples into its onboard chemistry laboratory.

WSJ: Mars Mission Seeks a Happy Landing

The rover will drill into the block and cook a sample from it.

MSN: New Mars rover hunts for life by 'cooking' rocks