crack/kræk/

vt

1. 使破裂；使裂开

• crack a glass across the bottom 使玻璃杯底裂开

2. 使发出爆裂声

• crack the joints of one's fingers 弯曲指关节使其发出响声

• crack a whip 甩响鞭

3. 砸开；打开

• crack a nut 把坚果砸开

4. 使(声音)变粗(或沙哑)

5. 重击

• The boy fell down and cracked his head against the wall. 男孩摔倒了，头撞到了墙上。

6. 破译；侦破；解答(难题等)

• crack codes 破译代码

• crack a murder case 侦破一个谋条案

7. 使(心)破碎；使失常

8. 说(笑话)

• The lecture came to life when the professor cracked a joke. 教授说了个笑话，讲座便活跃了起来。

vi

1. 破裂；裂开

• Don't pour hot water into the glass now or it will crack. 现在不要把热水倒进玻璃杯里，不然它会炸裂的。

• The branch cracked under the weight of snow. 雪的重量把树枝压裂了。

2. 发出爆裂声

• I heard firecrackers cracking. 我听到爆竹噼噼啪啪地响。

3. (嗓子)变粗，变沙哑

• Her voice cracked with emotion. 由于激动，她的声音变得嘶哑。

4. (身体)垮掉；屈服

• If she continues to work at that pace her health will certainly crack. 如果她继续以那种速度工作，她的身体一定会垮的。

词组crack back 口 (生气地)顶嘴 crack down (on) (对…)采取严厉措施；镇压 crack on 继续疾驰；继续做 crack wise 俚 说笑话