例句與造句

1. Upon contact with the atmosphere, weathering occurs and the sulfide minerals oxidize to form pink erythrite ( " cobalt glance " : Co 3 ( AsO 4 ) 2 ?H 2 O ) and spherocobaltite ( CoCO 3 ).
2. It's difficult to find cobalt glance in a sentence. 用cobalt glance造句挺難的