A trap is one of the five essential requisites for a commercial accumulation of oil or gas.

圈闭是石油和天然气形成商业性聚集的五大要素之一。

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The oil reservoir shall act as a barrier to trap moisture and provide sufficient time for a planned shutdown in the event of an outer seal failure.

油箱应该在外部密封失效、设备关闭的一段时间内具有防潮屏障的功能。

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Subtle oil-gas reservoir or trap is a practical term proposed for describing exploration activities.

隐蔽油气藏（隐蔽圈闭）是一种因勘探活动而提出的实用性术语。

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The aforementioned actions were at least spun very effectively to portray Congress as a sympathetic body demonstrating concern for escalating oil prices, a trap some Americans surely fell into.

CENTERFORSECURITYPOLICY: Hindsight to augment our foresight