knotty造句
31. How to stop the communication of network eroticism, is a world topic and knotty problem.
32. A knotty-pine grandfather-clock business may sound great, but what if there's only one source of knotty pine?
33. Field application shows that nanometer blocking agent is a new method for the simplified string of knotty injectors in high-temperature high-pressure and low permeability reservoirs.
34. As a result, legislator employ various procedual devices to handle knotty problems.
35. Corrosion from naphthenic acid has been one of the knotty problems in petroleum processing industry.
36. It has a website, but it still has to unlace the knotty problem facing all weeklies trying to manage themselves into an online future — what does a Web-based weekly look like?
37. Mrs. Wu Sun - fu looked suddenly worried, as if she was wrestling with some knotty problem.
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