Cobalt - based alloy is a kind of important materials used in elevated temperature.钴基合金是一种重要的高温材料.Recovery of cobalt from Co - Ni residue in zinc hydrometallurgy has been studied.研究了从湿法炼锌净化钴镍渣中回收有价金属....a woman in a soft...
Gannets are denizens of the open ocean.鲣鸟栖息在外海地区。polar bears, denizens of the frozen north北极熊，在冰天雪地的北方生活的动物At length these denizens of the swamps disappeared in their turn.到了后来,连这些沼泽国的居民们也不见了....
He holed from nine feet at the 18th.他打到第18洞时从9英尺外击球入穴。The police think the bank robbers are holed up in Chicago.警方认为抢银行的人藏在芝加哥.The enemy was holed up in a few isolated strongholds.敌人龟缩在几个孤立的据点里....