您要查找的是不是：
- curved extension crack 弯曲延伸裂纹
- A little crack detracts from the value of the vase. 小小的裂痕减损那个花瓶的价值。
- A bullet describes a curved path in the air. 子弹在空中作曲线运动。
- The marchers jumped off at the crack of dawn. 行军队伍在破晓时出发了。
- The riot police started to crack down on them. 防暴警察开始对他们采取镇压行动。
- He asked for an extension of his visa. 他申请延长签证有效期。
- The spear curved through the air. 标枪在空中沿曲线运动。
- You'll crack up if you go on working so hard. 你继续这样拚命干下去，身体会吃不消的。
- The road curved suddenly to the left. 那条路突然向左转弯。
- He built an extension onto his house. 他给自己的住宅扩建了一部分。
- Have another crack at solving this puzzle. 再试一试把这个难题解决了吧。
- Extension of the injured arm was painful. 把受伤的胳膊伸展开是很疼的。
- By extension, an array of any number of dimensions. 广义来说，矩阵可以是任意维数的数组。
- The road curved sharply to the right. 道路有个急转弯拐向右边。
- She made a crack about his fatness. 她取笑他肥胖。
- There is a crack in this window. 这扇窗户上有个裂纹。
- She got up at the crack of dawn. 天刚亮她便起床了。
- We built an extension to our house. 我们扩建了我家的房屋。
- Mary found knitting a hard nut to crack. 玛丽发现编织并非易事。
- He was the tough guy, the big shot, who gave orders with the crack of a whip. 他是个威风凛凛发号施令的强悍的家伙，是个大人物。
