Since the beginning of the recent eruption, a dense plume of water vapor, gas, and ash has concealed the summit of the Nabro volcano.
自火山喷发以来，纳布诺火山的山顶一直被大量的水蒸气，气体及火山灰所遮盖。
These are cleverly concealed behind the cladding to ensure that water is drained away behind the facade whilst snow sliding from the roof far is directed away from the gutter.
这些都巧妙地隐藏在包层背后，以确保雨水不影响建筑，同时使积雪远离地沟。
Saline Halos are often formed in the soil containing Fe and Mn oxides and organic material by a concealed sulfide ore body under the action of the ground water.
隐伏硫化物矿体在地下水的作用下，在其覆盖层浅部含铁锰氧化物和有机质的土壤中形成盐晕。
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