n. a long narrow opening
n. a sudden sharp noise
n. a blemish resulting from a break without complete separation of the parts
n. a purified and potent form of cocaine that is smoked rather than snorted; highly addictive
n. 裂缝, 爆裂声
v. (使)爆裂, (使)裂开, (使)发出爆裂声
a. 第一流的
adv. 啪地一声
1. She heard a loud crack during the storm.
她在暴风雨中听到了一个响亮的裂缝声。
2. I need to fix the crack in the wall before painting.
我需要在粉刷之前修补墙上的裂缝。
3. He tried to crack the code to unlock the safe.
他试图破解密码以打开保险箱。