您要查找的是不是：
- Crack can classify into unharmful and harmful crack, the latter will damage the structure's monolith and durability. 裂缝一般分为无害裂缝和有害裂缝，其中有害裂缝严重影响结构的整体性及耐久性，进而影响工程的安全运行。
- Billets shall be free from all harmful cracks, central porosity, blow holes and pin holes. 钢坯需避免不良缺陷，如裂缝，中心孔隙，气泡和塞孔.
- 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 benign tumour will not cause you any fatal harm. 良性肿瘤不会对你有致命的伤害。
- The marchers jumped off at the crack of dawn. 行军队伍在破晓时出发了。
- If you do harm to me I shall not look over you. 如你对我使坏，我可不饶恕你。
- His failures did his reputation a lot of harm. 他屡次失败使他的声誉受到很大损害。
- The riot police started to crack down on them. 防暴警察开始对他们采取镇压行动。
- It wouldn't do him any harm to work a bit harder. 工作努力点对他没什么害处。
- 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。
- A little of it will not do you any harm. 一点点对你不会有什么坏处。
- Have another crack at solving this puzzle. 再试一试把这个难题解决了吧。
- The man formed a habit of taking harmful drugs. 这人养成了服用有害麻醉品的习惯。
- He did incalculable harm to her reputation. 他严重损害了她的声誉。
- 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。
- It is harmful to your health to drink too much. 过量喝酒对你的身体有害。
- Mary found knitting a hard nut to crack. 玛丽发现编织并非易事。
- It's harmful to your eyes to read in the bus. 在公共汽车上看书对你的眼睛有害。
