There is high tantalite grade for certain large scale granite - pegmatite pattern tantalite - columbite mine in our country.我国某大型花岗伟晶岩型铌钽矿含钽品位高居我国钽铌矿山之首.The measurement indicates that the optimized performance can be ach...
the fusion of copper and zinc to produce brass铜与锌熔合成黄铜Brass is formed by the fusion of copper and zinc.黄铜是通过铜和锌的熔合而成的.She was a fusion of the dreamer and doer.她是空想者和实干者的结合....
他们站在门外的暗处, 领队则在里面谈判.Outside in the gloom they stood, while the leader parleyed within.我们每个月聚在一起一整天，轮流担任领队。Once a month we met for the whole day, and in rotation each one led the group.该合唱队演唱了他们领队编写的大合唱.The choral society...
I work out regulary to keep fit.我经常努力锻炼身体以保持健康.He runs to keep fit.他跑步为了保持健康.I think the best way to keep fit is to go in for sports.我想保持身体健康的最好办法就是参加体育运动....