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- GCL 1 test instrument is used in the test for observing the high speed crack propagation and obtaining the crack speed curve. 试验过程中采用了GLC－1型高速裂纹扩展测试仪来测试裂纹的扩展速度，得到在裂纹扩展过程中裂纹扩展速度曲线。
- A little crack detracts from the value of the vase. 小小的裂痕减损那个花瓶的价值。
- No horse has a speed comparable to that of his. 没有一匹马的速度能比得上他的马。
- 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。
- 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。
- That's all there is to make a speed dial call. 在那里全部要进行快速拨号呼叫。
- Have another crack at solving this puzzle. 再试一试把这个难题解决了吧。
- The great virtue of air travel is speed. 乘飞机旅行的最大优点是速度快。
- She made a crack about his fatness. 她取笑他肥胖。
- He drove the car at full speed through the town. 他驾驶汽车全速穿过那座城镇。
- There is a crack in this window. 这扇窗户上有个裂纹。
- The car rushed at the bridge at astonishing speed. 汽车以惊人的速度向桥冲过去。
- She got up at the crack of dawn. 天刚亮她便起床了。
- Mary found knitting a hard nut to crack. 玛丽发现编织并非易事。
- The motorcycles were spinning along at full speed. 摩托车正全速疾驰。
- 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。
- What's the speed limit on the motorway? 高速公路的速度限制是多少?
- The speed of this aircraft is very high. 这架飞机的速度非常快。
- The new model delivers speed and fuel economy. 这种新型设计能提高速度、 节约燃料。
