名词 cracking:

1. a sudden sharp noise

2. the act of cracking something

3. the process whereby heavy molecules of naphtha or petroleum are broken down into hydrocarbons of lower molecular weight (especially in the oil-refining process)

cracklyadj.容易破裂的crackv.破裂；砸开；发出爆裂声；撞击；破解；变嘶哑；崩溃；制裁；<非正式>开玩笑n.裂缝；裂痕；爆裂声；猛击；尝试；俏皮话adj.训练有素的cracked stock裂化原料cracks growth裂纹扩展crack and rut裂缝和车辙cracking tube裂化管crack pattern裂缝分布图,裂纹图形crack a crust生活得还不错,收入尚堪自给cracked beams裂纹梁crack spacing裂缝间距crack control防裂,裂绞控制crack pouring灌缝

1. Printing business cards on a thirty-inch press is using a sledgehammer to crack a nut.
   在30英寸印刷机上印刷名片简直是大材小用，得不偿失。