潜水员们也经常穿着特制的潜水服和旧式的钢铁头盔，以使得他们在充满污染水体中不被侵害。
The divers also wear specialized dive suits and old-fashioned hard steel helmets so they can safely operate in contaminated water without being exposed to toxins.
石灰岩含水体中存在着受库水影响较大的浅循环潜水流和深循环裂隙扩散流。
There are the phreatic flow which shallow cycles and fissured diffusion flow deeply cycling, both are effected more or less by the reservoir water existed in the water-bearing block of limestone.
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