crack基本解释
vt,使破裂；打开；变声,同近
crack相关例句和用法Thunder cracked overhead..雷声在头顶炸响。
crack英英释义发出爆裂声英释vvto make a quick loud sound like the sound of something breaking, or to make something do this
crack短语fatigue crack,疲劳裂纹.短语
crack 真题例题真题例句...the key factor is how hard you are prepared to crack the whip
