He looks much too skinny / scrawny to be a weight - lifter.他瘦骨嶙峋的,当不了举重运动员.The valve lifter, a round cylinder, rides on the cam.气门挺杆为一圆筒体, 坐落在凸轮上.Liu Chunhong, a Chinese weight - lifter, has created three new world recor...
Pyrite is more abundant and cobaltiferous and occurs in heavy patches in the sulfide mass.黄铁矿很多,并且含钴,在硫化物块体中成稠密的斑块.At pegmatite contacts the composition changes to chalcopyrite, millerite, pyrite, and accompanied by magn...