When an oil pool or field has been discovered, wells are drilled into the ground.
当发现一个油藏或油田时，就在地下打井。
Water-proof for water tower, swimming pool, oil pool, toilet, internal and external wall and floor.
水塔、游泳池、油池、厕卫间及室内、外墙地面防水。
My sister smeared herself with suntan oil and slept by the swimming pool.
我妹妹用防晒油涂抹了全身，然后睡在那游泳池边。
The car skidded on a pool of oil and ran into the fence.
这辆小汽车在油洼里打滑，撞在围栏上。
The car skidded on a pool of oil and ran into the fence.
这辆小汽车在油洼里打滑，撞在围栏上。
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