When astronomers talk about the "habitable zone," they mean the shell around a star where the temperatures are right for liquid water.

当天文学家谈及“可居住区”时，他们指的是恒星以外温度适于液态水存在的空间层。

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Embankment shell variety, mostly for the intertidal zone or shallow seabed sediment mollusc species present health.

堤上贝壳种类丰富，多为潮间带或浅海泥沙海底软体动物的现生种属。

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These measures significantly reduce the resistance and laminar flow zone in the shell side. The gas pipe connection orientation on the shell side can be freely selected.

这些措施显著降低了壳程阻力和滞流区，壳程的气体接管方位可任意选定。

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He often has the Giants' defensive back play a "cover-2 shell, " a soft zone coverage that takes away deep routes and gives New York's defensive line time to harass an opposing quarterback.

WSJ: Again, Giants Are Brady Kryptonite

To penetrate that defensive shell, most teams sacrifice the puck, firing it into the zone in order to win it back amid the thicket of bodies near the net.

WSJ: How the Chicago Blackhawks Became Unbeatable