他兜里硬币的叮当声the jingle of coins in his pocket他们用掷硬币的方法决定谁先去.They flipped a coin to decide who would go first.这两个孩子同意用掷硬币的方法来决定这件事.The two boys agreed to decide the matter by tossing a coin....
Microscopically the ores are medium grained to amorphous.显微镜下,矿石为中粒至非晶质.Iron ores of greatest economic interest contain magnetite and hematite.最具有经济价值的铁矿包括磁铁矿和赤铁矿.Ores are also being obtained in quantity from other count...