名詞 cracking:

1. a sudden sharp noise
   同義詞：crack, snap
2. the act of cracking something
   同義詞：fracture, crack
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)

動(dòng)詞 crack:

1. become fractured; break or crack on the surface only
   同義詞：crack, check, break
2. make a very sharp explosive sound
   同義詞：crack
3. make a sharp sound
   同義詞：snap, crack
4. hit forcefully; deal a hard blow, making a cracking noise
   同義詞：crack
5. pass through (a barrier)
   同義詞：break through, crack
6. break partially but keep its integrity
   同義詞：crack
7. break suddenly and abruptly, as under tension
   同義詞：snap, crack
8. suffer a nervous breakdown
   同義詞：crack up, crack, crock up, break up, collapse
9. tell spontaneously
   同義詞：crack
10. cause to become cracked
    同義詞：crack
11. reduce (petroleum) to a simpler compound by cracking
    同義詞：crack
12. break into simpler molecules by means of heat
    同義詞：crack

形容詞 cracking:

1. very good
   同義詞：bang-up, bully, corking, dandy, great, groovy, keen, neat, nifty, not bad, peachy, slap-up, swell, smashing

1. There's a lot to be done, so let's get cracking.
   工作很多，咱們開(kāi)始干吧。
2. In a voice cracking with emotion, he announced the death of his father.
   他悲慟失聲地宣布了父親去世的消息。
3. Police are cracking down on drug dealers.
   警方現(xiàn)對(duì)販毒分子嚴(yán)懲不貸。
4. That was a cracking shot he played.
   他這一下打得妙極了。

crack.ing

n.Chemistry （名詞）【化學(xué)】
Thermal decomposition, sometimes with catalysis, of a complex substance, especially the breaking of petroleum molecules into shorter molecules to extract low-boiling fractions such as gasoline.
裂化：有時(shí)通過(guò)催化作用對(duì)復(fù)合物的熱分解，尤指把石油分子分解成更小的分子并提取低沸點(diǎn)的分餾部分，如汽油
adj.（形容詞）
Excellent; great:
優(yōu)秀的；美妙的：
例句：
had a cracking time at the dance.
在舞會(huì)上玩得很愉快

adv.（副詞）
Used as an intensive:
用于加強(qiáng)語(yǔ)氣：
例句：
a cracking good show.
極其精彩的表演