A pitfall trap can be any small container placed in the ground with the top level with the surrounding surface and filled with a preservative.
陷阱可以是任何放置在地面上的小容器，其顶部与周围的表面齐平，并装满防腐剂。
But somehow other countries' top businesses, even in India, the home of the licence Raj, have escaped this mediocrity trap.
但其他国家——甚至印度这个许可证制度的发源地——它们最优秀的行业都以某种方式避开了导致平庸的陷阱。
Gas may be found either dissolved in reservoir fluids or as free gas that tends to form a gas cap beneath the top seal on the reservoir trap.
气体可能在储层流体中以溶解形式或作为游离气而存在，游离气趋于在储层圈闭的盖层下面形成气顶。
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