Now tell me why he's coming. - Off shore drilling equipment.

告诉我他是为何而来。- 近海石油钻井设备。

Outcroppings are of particular interest because  Perseverance's drilling equipment only allows it to dig several centimetres deep.

露头特别令人感兴趣，因为“毅力号”的钻探设备只能挖掘几厘米深。

He at once sent E. L. Drake into the oil-fields with a complete drilling equipment, to look, not for saltwater, but for oil.

他立即派 E. L. Drake 带着完整的钻井设备进入油田，不是寻找海水，而是寻找石油。